{
  "$schema": "https://songforgeai.com/rock-corpus.schema.json",
  "name": "Rock Excellence Reference Corpus",
  "version": "0.1.0",
  "publishedAt": "2026-05-21",
  "license": "CC BY 4.0 — Attribution required. Lyrics NOT reproduced; title + artist + year + structural metadata only.",
  "summary": "Canonized rock songs across the 5 substyles (classic-rock-radio, arena-anthem, hard-rock-blues, prog-rock-literary, roots-heartland), with structural metadata + craft paradigm + POV mode + audit-axis annotations. 30 entries: 6 per substyle.",
  "methodology": [
    "Canon selection from Rolling Stone 500 Greatest Songs, Rolling Stone 500 Greatest Albums, Rock and Roll Hall of Fame catalog, Grammy Lifetime Achievement rock catalogs, BBC Radio 2 Sounds of the 70s/80s lists, Classic Rock magazine canonical playlists.",
    "Substyle classification follows Rk4 ROCK_SUBSTYLES registry.",
    "Craft paradigm from Rk1 RockSubstyleData typology (title-first / riff-first / acoustic-physics-first / literary-philosophical-first).",
    "POV mode from Rk1 RockSubstyleData typology (first-person-narrative / second-person-direct-address / first-person-plural-anthem / mixed-springsteen-pivot).",
    "Lyrics NOT reproduced; title + artist + year forms the stable reference.",
    "Audit-axis annotations (TTI / RHC / CWM / GDD / VPI band expectations) attached to enable corpus calibration of the audit primitives in Rk11.5."
  ],
  "schema": {
    "id": "string", "title": "string", "artist": "string", "year": "number",
    "substyle": "string", "substyleNote": "string (optional)",
    "craftParadigm": "string", "povMode": "string",
    "hitCredential": "string", "expectedBand": "string",
    "expectedComposite": "number", "structure": "string",
    "titlePlacement": "string", "titleCarriesEmotionalMath": "boolean",
    "estimatedTimeToHookSeconds": "number",
    "expectedTtiBand": "string", "expectedRhcBand": "string",
    "expectedCwmBand": "string", "expectedGddBand": "string",
    "expectedVpiBand": "string",
    "clicheTier1Used": "string[]", "failureModesAvoided": "string[]",
    "substyleSignals": "string[]", "notable": "string[]"
  },
  "entries": [
    {
      "id": "rock-001", "title": "Stairway to Heaven", "artist": "Led Zeppelin", "year": 1971,
      "substyle": "classic-rock-radio", "craftParadigm": "literary-philosophical-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 Greatest Songs (#31); most-requested FM rock song of all time; Grammy Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 98,
      "structure": "Through-composed 8-minute build: acoustic intro → mid-tempo → electric climax → final solo",
      "titlePlacement": "Title in final line",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 240,
      "expectedTtiBand": "high", "expectedRhcBand": "n/a-no-traditional-chorus",
      "expectedCwmBand": "high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Tension-Less Title", "Concept Drift", "Repetition Bloat"],
      "substyleSignals": ["Through-composed long form", "Literary mysticism", "Plant-Page guitar architecture"],
      "notable": ["Sets ceiling for classic-rock-radio + literary-philosophical-first paradigm", "Title-bridge mundane(stairway)-transcendent(heaven) pair"]
    },
    {
      "id": "rock-002", "title": "Hotel California", "artist": "The Eagles", "year": 1976,
      "substyle": "classic-rock-radio", "craftParadigm": "literary-philosophical-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#49); Grammy Record of the Year 1977; Rock Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 97,
      "structure": "Verse-chorus with two solo sections + outro twin-lead solo",
      "titlePlacement": "Title closes chorus 3×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 90,
      "expectedTtiBand": "mid-high", "expectedRhcBand": "mid",
      "expectedCwmBand": "high", "expectedGddBand": "mid-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Concept Drift"],
      "substyleSignals": ["Place-name title as iconic location", "Narrative allegory", "Twin-lead guitar outro as instrumental climax"],
      "notable": ["Concrete imagery (mirror, ceiling, mission bell) anchors the allegory", "Title carries mundane-transcendent contrast"]
    },
    {
      "id": "rock-003", "title": "More Than a Feeling", "artist": "Boston", "year": 1976,
      "substyle": "classic-rock-radio", "craftParadigm": "acoustic-physics-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#500); platinum debut single; arena-rock template",
      "expectedBand": "S", "expectedComposite": 94,
      "structure": "Verse-chorus with extended bridge + soaring outro vocal",
      "titlePlacement": "Title in chorus opener",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 50,
      "expectedTtiBand": "mid", "expectedRhcBand": "high",
      "expectedCwmBand": "mid", "expectedGddBand": "mid",
      "expectedVpiBand": "very-low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Vocal Lift Absence", "Closed-Vowel Cliff"],
      "substyleSignals": ["Open-vowel chorus payoff", "Tom Scholz studio architecture", "Soaring vocal climax"],
      "notable": ["Anchors classic-rock-radio + acoustic-physics-first paradigm", "Chorus 'feeling' on open vowel for full chest-voice payoff"]
    },
    {
      "id": "rock-004", "title": "Sweet Home Alabama", "artist": "Lynyrd Skynyrd", "year": 1974,
      "substyle": "classic-rock-radio", "craftParadigm": "title-first", "povMode": "first-person-plural-anthem",
      "hitCredential": "Rolling Stone 500 (#398); Southern Rock canon; Rock Hall of Fame",
      "expectedBand": "S", "expectedComposite": 92,
      "structure": "Verse-chorus with iconic riff intro + extended outro",
      "titlePlacement": "Title repeats 8× in chorus",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 28,
      "expectedTtiBand": "mid", "expectedRhcBand": "high",
      "expectedCwmBand": "high", "expectedGddBand": "mid",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Hook Shadowing", "Authenticity Cosplay"],
      "substyleSignals": ["Place-name title", "Southern-rock guitar architecture", "Crowd-chant chorus"],
      "notable": ["Title carries place-as-anthem operation", "Open-vowel '-bama' chorus payoff"]
    },
    {
      "id": "rock-005", "title": "Dream On", "artist": "Aerosmith", "year": 1973,
      "substyle": "classic-rock-radio", "craftParadigm": "acoustic-physics-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#172); Aerosmith breakthrough; Rock Hall of Fame",
      "expectedBand": "S", "expectedComposite": 93,
      "structure": "Power ballad: piano-led verses build to belted chorus + outro scream",
      "titlePlacement": "Title in chorus, repeated 8× in outro",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 50,
      "expectedTtiBand": "mid", "expectedRhcBand": "high",
      "expectedCwmBand": "mid", "expectedGddBand": "high",
      "expectedVpiBand": "very-low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Closed-Vowel Cliff", "Vocal Lift Absence"],
      "substyleSignals": ["Power ballad architecture", "Imperative-opener title", "Steven Tyler chest-voice belt"],
      "notable": ["'On' sustains as open vowel through the outro climb", "Imperative title commands the listener"]
    },
    {
      "id": "rock-006", "title": "Free Bird", "artist": "Lynyrd Skynyrd", "year": 1973,
      "substyle": "classic-rock-radio", "craftParadigm": "literary-philosophical-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#193); Southern Rock canon; Rock Hall of Fame",
      "expectedBand": "S", "expectedComposite": 94,
      "structure": "Ballad opening → mid-tempo → 5-minute triple-lead guitar outro",
      "titlePlacement": "Title in chorus refrain 3×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 60,
      "expectedTtiBand": "mid", "expectedRhcBand": "high",
      "expectedCwmBand": "mid", "expectedGddBand": "very-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Chant Gap Absence", "Concept Drift"],
      "substyleSignals": ["Extended instrumental outro", "Title = freedom-as-flight image", "Allen Collins twin-lead architecture"],
      "notable": ["5-minute guitar outro is the gap-design ceiling for this corpus", "Title carries abstract-concrete (bird) contrast"]
    },
    {
      "id": "rock-007", "title": "Don't Stop Believin'", "artist": "Journey", "year": 1981,
      "substyle": "arena-anthem", "craftParadigm": "title-first", "povMode": "first-person-plural-anthem",
      "hitCredential": "Most-downloaded 20th-century rock song; Rolling Stone 500 (#133); arena anthem canon",
      "expectedBand": "S+", "expectedComposite": 97,
      "structure": "Verse-pre-chorus-chorus with delayed chorus drop after 3 minutes",
      "titlePlacement": "Title in chorus 3× + final repeat",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 165,
      "expectedTtiBand": "very-high", "expectedRhcBand": "very-high",
      "expectedCwmBand": "high", "expectedGddBand": "high",
      "expectedVpiBand": "very-low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Tension-Less Title", "Vocal Lift Absence", "Hook Shadowing"],
      "substyleSignals": ["Negation-imperative title", "Delayed chorus reveal", "Steve Perry chest-voice climb"],
      "notable": ["Title-tension index near maximum (negation + imperative)", "Delayed-hook architecture is arena-rock signature"]
    },
    {
      "id": "rock-008", "title": "Livin' on a Prayer", "artist": "Bon Jovi", "year": 1986,
      "substyle": "arena-anthem", "craftParadigm": "title-first", "povMode": "mixed-springsteen-pivot",
      "hitCredential": "Billboard #1 1987; Rolling Stone 500 (#317); arena-anthem canon; Desmond Child co-write",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Verse-prechorus-chorus with key-change for final chorus",
      "titlePlacement": "Title closes chorus 3×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 55,
      "expectedTtiBand": "very-high", "expectedRhcBand": "very-high",
      "expectedCwmBand": "high", "expectedGddBand": "mid-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Hook Shadowing", "Authenticity Cosplay"],
      "substyleSignals": ["Desmond Child title-tension architecture", "Tommy + Gina blue-collar narrative", "Final-chorus key-change"],
      "notable": ["Title operationalizes mundane(prayer)-transcendent pairing", "Tommy/Gina concrete characters anchor the anthem"]
    },
    {
      "id": "rock-009", "title": "We Will Rock You", "artist": "Queen", "year": 1977,
      "substyle": "arena-anthem", "craftParadigm": "acoustic-physics-first", "povMode": "first-person-plural-anthem",
      "hitCredential": "Universal sports anthem; Rolling Stone 500 (#330); Grammy Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Stomp-stomp-clap chant verses + minimal melodic chorus",
      "titlePlacement": "Title closes each section",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 8,
      "expectedTtiBand": "high", "expectedRhcBand": "very-high",
      "expectedCwmBand": "high", "expectedGddBand": "very-high",
      "expectedVpiBand": "mid-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Vocal Lift Absence", "Chant Gap Absence"],
      "substyleSignals": ["Stomp-clap rhythm primitive", "Universal-pronoun anthem (we will rock you)", "Maximum stadium-participation design"],
      "notable": ["GDD ceiling for arena-anthem — entire song is gap design", "Closed-vowel 'you' at peak is the cost of universal singalability"]
    },
    {
      "id": "rock-010", "title": "We Are the Champions", "artist": "Queen", "year": 1977,
      "substyle": "arena-anthem", "craftParadigm": "acoustic-physics-first", "povMode": "first-person-plural-anthem",
      "hitCredential": "Universal sports anthem (pair with We Will Rock You); Rolling Stone 500 (#380); Grammy Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Ballad verse + soaring chorus with key-change",
      "titlePlacement": "Title in chorus opener + closer",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 40,
      "expectedTtiBand": "high", "expectedRhcBand": "high",
      "expectedCwmBand": "mid", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Closed-Vowel Cliff", "Hook Shadowing"],
      "substyleSignals": ["Mercury chest-voice climb", "Anthem collective pronoun", "Final modulation for catharsis"],
      "notable": ["'Champions' lands on open vowel for chest-voice belt", "Universal-collective anthem ceiling"]
    },
    {
      "id": "rock-011", "title": "Eye of the Tiger", "artist": "Survivor", "year": 1982,
      "substyle": "arena-anthem", "craftParadigm": "title-first", "povMode": "second-person-direct-address",
      "hitCredential": "Billboard #1 1982; Rocky III; Grammy Best Rock Performance 1983",
      "expectedBand": "S", "expectedComposite": 93,
      "structure": "Verse-prechorus-chorus with iconic open riff",
      "titlePlacement": "Title closes chorus 2×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 18,
      "expectedTtiBand": "high", "expectedRhcBand": "high",
      "expectedCwmBand": "high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Tension-Less Title", "Vocal Lift Absence"],
      "substyleSignals": ["Imperative-opener (Risin' up)", "Animal-metaphor title", "Cinematic instrumentation"],
      "notable": ["Title contains body-animal contrast pair", "Acoustic-physics: 'tiger' lands on open 'eye' vowel"]
    },
    {
      "id": "rock-012", "title": "Pour Some Sugar on Me", "artist": "Def Leppard", "year": 1987,
      "substyle": "arena-anthem", "craftParadigm": "title-first", "povMode": "second-person-direct-address",
      "hitCredential": "Billboard #2 1988; defining Mutt Lange production; Hysteria 25M+ sales",
      "expectedBand": "S", "expectedComposite": 91,
      "structure": "Verse-prechorus-chorus with multi-layered vocal stacks",
      "titlePlacement": "Title closes chorus 4×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 35,
      "expectedTtiBand": "mid-high", "expectedRhcBand": "very-high",
      "expectedCwmBand": "mid-high", "expectedGddBand": "high",
      "expectedVpiBand": "very-low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Closed-Vowel Cliff", "Power-Ballad Mismatch"],
      "substyleSignals": ["Mutt Lange vocal stacking", "Imperative title", "Repeating chorus chant"],
      "notable": ["'Sugar on me' ends on open vowel for sustained belt", "Mutt Lange production paradigm exemplar"]
    },
    {
      "id": "rock-013", "title": "Highway to Hell", "artist": "AC/DC", "year": 1979,
      "substyle": "hard-rock-blues", "craftParadigm": "riff-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#254); Rock Hall of Fame; AC/DC breakthrough",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Riff-driven verse-chorus + extended outro chorus",
      "titlePlacement": "Title closes chorus 4×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 30,
      "expectedTtiBand": "very-high", "expectedRhcBand": "high",
      "expectedCwmBand": "high", "expectedGddBand": "mid-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Tension-Less Title", "Hook Shadowing"],
      "substyleSignals": ["Title = mundane(highway)-transcendent(hell) pair + preposition bridge", "Angus Young blues-rock riff", "Bon Scott direct delivery"],
      "notable": ["Title-tension index near max (mundane-transcendent + preposition + length)", "AC/DC signature riff-first paradigm exemplar"]
    },
    {
      "id": "rock-014", "title": "Back in Black", "artist": "AC/DC", "year": 1980,
      "substyle": "hard-rock-blues", "craftParadigm": "riff-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#187); Best-selling album of all time; Rock Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Iconic riff intro + verse-chorus with solo break",
      "titlePlacement": "Title in chorus 3× + outro",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 24,
      "expectedTtiBand": "high", "expectedRhcBand": "very-high",
      "expectedCwmBand": "mid-high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Concept Drift"],
      "substyleSignals": ["Angus Young riff-first architecture", "Brian Johnson high-register replacement vocal", "Tribute to Bon Scott embedded in title"],
      "notable": ["Riff identifies the song in 4 seconds", "Title carries return-narrative emotional math"]
    },
    {
      "id": "rock-015", "title": "Smoke on the Water", "artist": "Deep Purple", "year": 1972,
      "substyle": "hard-rock-blues", "craftParadigm": "riff-first", "povMode": "first-person-plural-anthem",
      "hitCredential": "Rolling Stone 500 (#434); most-learned guitar riff; Rock Hall of Fame",
      "expectedBand": "S", "expectedComposite": 94,
      "structure": "Riff-driven verse-chorus with extended solo + reprise",
      "titlePlacement": "Title in chorus 3×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 60,
      "expectedTtiBand": "mid-high", "expectedRhcBand": "high",
      "expectedCwmBand": "very-high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Hook Shadowing", "Repetition Bloat"],
      "substyleSignals": ["Iconic 4-note Blackmore riff", "Concrete event-narrative (Frank Zappa fire)", "Title-bridge mundane-elemental pair"],
      "notable": ["Riff = song identity (acoustic-physics ceiling for hard-rock-blues)", "Title-bridge mundane(smoke)+place(water) is dense imagery"]
    },
    {
      "id": "rock-016", "title": "Sweet Child O' Mine", "artist": "Guns N' Roses", "year": 1987,
      "substyle": "hard-rock-blues", "craftParadigm": "riff-first", "povMode": "first-person-narrative",
      "hitCredential": "Billboard #1 1988; Rolling Stone 500 (#196); Rock Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Slash riff intro + verse-chorus + Axl outro climb",
      "titlePlacement": "Title closes chorus 4×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 65,
      "expectedTtiBand": "mid-high", "expectedRhcBand": "high",
      "expectedCwmBand": "mid-high", "expectedGddBand": "very-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Closed-Vowel Cliff", "Vocal Lift Absence"],
      "substyleSignals": ["Slash arpeggio-as-riff architecture", "Axl chest-to-head climb", "Outro 'where do we go now' as gap-design"],
      "notable": ["Riff is the identity within 8 seconds", "'Mine' lands on open vowel at chorus peak"]
    },
    {
      "id": "rock-017", "title": "Welcome to the Jungle", "artist": "Guns N' Roses", "year": 1987,
      "substyle": "hard-rock-blues", "craftParadigm": "riff-first", "povMode": "second-person-direct-address",
      "hitCredential": "Rolling Stone 500 (#467); Appetite for Destruction defining track; Rock Hall of Fame",
      "expectedBand": "S", "expectedComposite": 93,
      "structure": "Iconic Slash riff intro + verse-chorus with Axl scream + breakdown",
      "titlePlacement": "Title in chorus opener 2×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 45,
      "expectedTtiBand": "high", "expectedRhcBand": "high",
      "expectedCwmBand": "high", "expectedGddBand": "high",
      "expectedVpiBand": "mid-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Hook Shadowing"],
      "substyleSignals": ["Imperative-second-person title", "Place-as-metaphor (jungle = LA)", "Axl primal scream as climax instrument"],
      "notable": ["Title = imperative + mundane-transcendent (welcome+jungle)", "Hard-rock-blues lane ceiling for second-person POV"]
    },
    {
      "id": "rock-018", "title": "Paranoid", "artist": "Black Sabbath", "year": 1970,
      "substyle": "hard-rock-blues", "craftParadigm": "riff-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#250); Black Sabbath breakthrough; Metal Hall of Fame",
      "expectedBand": "S", "expectedComposite": 92,
      "structure": "Iommi riff + tight verse-chorus with double-time solo",
      "titlePlacement": "Title in chorus opener",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 12,
      "expectedTtiBand": "low-mid", "expectedRhcBand": "high",
      "expectedCwmBand": "low-mid", "expectedGddBand": "mid",
      "expectedVpiBand": "mid-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Repetition Bloat", "Hook Shadowing"],
      "substyleSignals": ["Iommi power-chord riff", "Ozzy psychological-first-person narration", "2:48 compressed song architecture"],
      "notable": ["Riff appears in 4 seconds (acoustic-physics ceiling)", "Title is single-word but psychologically heavy"]
    },
    {
      "id": "rock-019", "title": "2112: Overture / The Temples of Syrinx", "artist": "Rush", "year": 1976,
      "substyle": "prog-rock-literary", "craftParadigm": "literary-philosophical-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone canonical prog-rock anchor; Rush breakthrough album",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Multi-movement 20-minute suite: overture → narrative sections → finale",
      "titlePlacement": "Title is concept/date — appears in lyric as Syrinx",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 200,
      "expectedTtiBand": "mid", "expectedRhcBand": "n/a-no-traditional-chorus",
      "expectedCwmBand": "mid-high", "expectedGddBand": "very-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Concept Drift", "Authenticity Cosplay"],
      "substyleSignals": ["Multi-movement suite", "Neil Peart literary lyrics (Ayn Rand-influenced)", "Geddy Lee chest-falsetto"],
      "notable": ["Sets ceiling for prog-rock-literary substyle", "Concept-album mechanics extend the song-form definition"]
    },
    {
      "id": "rock-020", "title": "Tom Sawyer", "artist": "Rush", "year": 1981,
      "substyle": "prog-rock-literary", "craftParadigm": "literary-philosophical-first", "povMode": "third-person-narrative",
      "hitCredential": "Rolling Stone 500 (#449); Rush radio breakthrough; Moving Pictures defining track",
      "expectedBand": "S", "expectedComposite": 94,
      "structure": "Verse-chorus with synth/drum solo break + recap",
      "titlePlacement": "Title is character reference (literary)",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 30,
      "expectedTtiBand": "mid", "expectedRhcBand": "mid-high",
      "expectedCwmBand": "mid", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Concept Drift"],
      "substyleSignals": ["Literary-allusion title", "Peart's philosophical lyric architecture", "Synth-and-drum instrumental break"],
      "notable": ["Bridges prog-rock-literary into AOR radio reach", "Title carries literary-character emotional math"]
    },
    {
      "id": "rock-021", "title": "Comfortably Numb", "artist": "Pink Floyd", "year": 1979,
      "substyle": "prog-rock-literary", "craftParadigm": "literary-philosophical-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#314); The Wall canonical track; Rock Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Two-voice dialogue verses + Gilmour climactic solo",
      "titlePlacement": "Title closes chorus 2×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 75,
      "expectedTtiBand": "mid-high", "expectedRhcBand": "mid",
      "expectedCwmBand": "mid", "expectedGddBand": "very-high",
      "expectedVpiBand": "mid-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Vocal Lift Absence", "Concept Drift"],
      "substyleSignals": ["Two-voice dialogue (Waters/Gilmour)", "Concept-album integration", "Climactic 2-minute Gilmour outro solo"],
      "notable": ["Outro solo is the GDD ceiling for prog-rock-literary", "Title-tension paradox (comfortably + numb)"]
    },
    {
      "id": "rock-022", "title": "Roundabout", "artist": "Yes", "year": 1971,
      "substyle": "prog-rock-literary", "craftParadigm": "literary-philosophical-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone canonical prog-rock anchor; Fragile defining track",
      "expectedBand": "S", "expectedComposite": 92,
      "structure": "Multi-section 8-minute suite with acoustic intro, instrumental breaks, vocal climax",
      "titlePlacement": "Title in chorus refrain 2×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 95,
      "expectedTtiBand": "low-mid", "expectedRhcBand": "n/a-no-traditional-chorus",
      "expectedCwmBand": "mid", "expectedGddBand": "very-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Power-Ballad Mismatch", "Hook Shadowing"],
      "substyleSignals": ["Chris Squire bass-as-melody", "Howe acoustic-to-electric architecture", "Multi-section through-composed form"],
      "notable": ["Defines prog-rock-literary acoustic-electric architecture", "Title-image (geographical roundabout) carries metaphor"]
    },
    {
      "id": "rock-023", "title": "In the Court of the Crimson King", "artist": "King Crimson", "year": 1969,
      "substyle": "prog-rock-literary", "craftParadigm": "literary-philosophical-first", "povMode": "first-person-narrative",
      "hitCredential": "Prog-rock founding document; Rolling Stone 500 Greatest Albums (#175)",
      "expectedBand": "S", "expectedComposite": 93,
      "structure": "Through-composed 9-minute movement with mellotron orchestration",
      "titlePlacement": "Title in chorus refrain at section ends",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 110,
      "expectedTtiBand": "high", "expectedRhcBand": "n/a-no-traditional-chorus",
      "expectedCwmBand": "mid", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Tension-Less Title", "Repetition Bloat"],
      "substyleSignals": ["Mellotron-as-orchestra", "Sinfield literary lyrics", "Through-composed form"],
      "notable": ["Founding document of prog-rock-literary", "Title-tension: preposition-bridged noun pair (court+king)"]
    },
    {
      "id": "rock-024", "title": "Aqualung", "artist": "Jethro Tull", "year": 1971,
      "substyle": "prog-rock-literary", "craftParadigm": "literary-philosophical-first", "povMode": "third-person-narrative",
      "hitCredential": "Rolling Stone 500 Greatest Albums (#337); Jethro Tull defining track",
      "expectedBand": "S", "expectedComposite": 91,
      "structure": "Verse-riff alternation with acoustic interlude + return",
      "titlePlacement": "Title is character reference (literary)",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 8,
      "expectedTtiBand": "low-mid", "expectedRhcBand": "mid",
      "expectedCwmBand": "very-high", "expectedGddBand": "mid-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Concept Drift"],
      "substyleSignals": ["Anderson literary character-portrait", "Iconic Iommi-Anderson riff", "Acoustic-electric alternation"],
      "notable": ["Character-portrait lyric: homeless man named Aqualung", "Concrete imagery density anchors the allegory"]
    },
    {
      "id": "rock-025", "title": "Born to Run", "artist": "Bruce Springsteen", "year": 1975,
      "substyle": "roots-heartland", "craftParadigm": "title-first", "povMode": "mixed-springsteen-pivot",
      "hitCredential": "Rolling Stone 500 (#21); defining heartland-rock anthem; Rock Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 98,
      "structure": "Wall-of-sound verse-chorus with multi-instrumental climax + Clarence sax solo",
      "titlePlacement": "Title closes chorus 3× + outro",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 75,
      "expectedTtiBand": "very-high", "expectedRhcBand": "high",
      "expectedCwmBand": "very-high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Concept Drift", "Tension-Less Title"],
      "substyleSignals": ["Spector wall-of-sound production", "Place-specific narrative (Highway 9, Death Valley)", "E Street Band ensemble architecture"],
      "notable": ["Sets ceiling for roots-heartland", "Title = passive(born)+active(run) — defining tension pair"]
    },
    {
      "id": "rock-026", "title": "Thunder Road", "artist": "Bruce Springsteen", "year": 1975,
      "substyle": "roots-heartland", "craftParadigm": "title-first", "povMode": "mixed-springsteen-pivot",
      "hitCredential": "Rolling Stone 500 (#86); Born to Run opener; Rock Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Piano-led narrative ballad → ensemble climax",
      "titlePlacement": "Title in final chorus + outro",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 250,
      "expectedTtiBand": "high", "expectedRhcBand": "mid",
      "expectedCwmBand": "very-high", "expectedGddBand": "mid-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Greedy Spot On Peak", "Repetition Bloat"],
      "substyleSignals": ["Springsteen pivot mid-song (Mary character → 'we')", "Place-specific (Thunder Road, screen door)", "Roy Bittan piano architecture"],
      "notable": ["Most-concrete imagery density in the corpus", "Springsteen-pivot POV mode exemplar"]
    },
    {
      "id": "rock-027", "title": "Born in the U.S.A.", "artist": "Bruce Springsteen", "year": 1984,
      "substyle": "roots-heartland", "craftParadigm": "title-first", "povMode": "first-person-narrative",
      "hitCredential": "Rolling Stone 500 (#275); 7 top-10 singles from album; Rock Hall of Fame",
      "expectedBand": "S+", "expectedComposite": 96,
      "structure": "Verse-chorus with synth-anthem production",
      "titlePlacement": "Title closes chorus 6×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 35,
      "expectedTtiBand": "very-high", "expectedRhcBand": "very-high",
      "expectedCwmBand": "very-high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Hook Shadowing"],
      "substyleSignals": ["Vietnam-veteran narrative voice", "Place-name title (USA)", "Massive synth anthem production"],
      "notable": ["Title is iconic place-anthem operation", "Misread as patriotic anthem — actually critique"]
    },
    {
      "id": "rock-028", "title": "Free Fallin'", "artist": "Tom Petty", "year": 1989,
      "substyle": "roots-heartland", "craftParadigm": "acoustic-physics-first", "povMode": "third-person-narrative",
      "hitCredential": "Billboard #7 1989; Rolling Stone 500 (#196); Petty's most-played song; Rock Hall of Fame",
      "expectedBand": "S", "expectedComposite": 94,
      "structure": "Three-chord acoustic foundation + verse-chorus with Lynne harmonies",
      "titlePlacement": "Title in chorus + outro repeat 7×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 35,
      "expectedTtiBand": "mid-high", "expectedRhcBand": "very-high",
      "expectedCwmBand": "very-high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Vocal Lift Absence"],
      "substyleSignals": ["Petty narrative compression (the girl, the boy, Reseda)", "Three-chord folk-rock skeleton", "ELO Jeff Lynne harmonies"],
      "notable": ["Place-name (Reseda, Mulholland) anchors LA scene", "Outro repeats title 7× as anthem closer"]
    },
    {
      "id": "rock-029", "title": "Jack & Diane", "artist": "John Mellencamp", "year": 1982,
      "substyle": "roots-heartland", "craftParadigm": "title-first", "povMode": "third-person-narrative",
      "hitCredential": "Billboard #1 1982; defining heartland-narrative; Rolling Stone canonical",
      "expectedBand": "S", "expectedComposite": 92,
      "structure": "Story-song verse-chorus with handclap breakdown",
      "titlePlacement": "Title in chorus refrain + closing tag",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 50,
      "expectedTtiBand": "mid", "expectedRhcBand": "mid-high",
      "expectedCwmBand": "very-high", "expectedGddBand": "mid-high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Authenticity Cosplay", "Hook Shadowing"],
      "substyleSignals": ["Two-name title (Jack + Diane)", "Concrete teen-narrative (Tastee Freez, dribble down the leg)", "Handclap stadium breakdown"],
      "notable": ["Title = paired-name micro-narrative", "Heartland concrete imagery ceiling"]
    },
    {
      "id": "rock-030", "title": "Old Time Rock and Roll", "artist": "Bob Seger", "year": 1978,
      "substyle": "roots-heartland", "craftParadigm": "title-first", "povMode": "first-person-narrative",
      "hitCredential": "Billboard #28 1979; Risky Business anthem; Rock Hall of Fame",
      "expectedBand": "S", "expectedComposite": 90,
      "structure": "Piano-driven boogie verse-chorus + saxophone solo",
      "titlePlacement": "Title closes chorus 4×",
      "titleCarriesEmotionalMath": true,
      "estimatedTimeToHookSeconds": 30,
      "expectedTtiBand": "mid", "expectedRhcBand": "high",
      "expectedCwmBand": "mid-high", "expectedGddBand": "high",
      "expectedVpiBand": "low-collision",
      "clicheTier1Used": [],
      "failureModesAvoided": ["Power-Ballad Mismatch", "Authenticity Cosplay"],
      "substyleSignals": ["Boogie piano architecture", "Title-as-anthem operation", "Saxophone instrumental break"],
      "notable": ["Title = era-anthem nostalgia operation", "Open-vowel 'roll' chorus payoff at peak"]
    }
  ]
}