Rock Lyric System
“At rock altitude, the vowel must yield to the pitch.”
The first arc to ground a Sacred Accident in measurable formant physics. Above ~G4 chest voice, F0 collides with the structural formant of closed vowels — the singer reshapes mid-note, breaking the chorus payoff. The Vowel-Pitch Integrity primitive flags closed-vowel cliffs at chorus peaks. 5 substyles span classic-rock-radio → roots-heartland, each with its own VPI ceiling.
Try It — 87 starter prompts
Browse all 87 →Each prompt is hand-tuned to exercise the rock load-bearing axis. Click to start with the prompt pre-loaded into the forge.
Highway Overpass at 3 AM
A driver passes under sodium lights, watching tail-lights blur into infinity. The radio crackles between stations—nothing holds. Write a song about the particular loneliness of motion without destination.
Twenty kids crammed in a basement that smells like wet concrete and spilled beer. This is the last show before the landlord locks the door. Capture the defiance of people who know the venue is dying but play anyway.
An old man leans against the felt, watching his shot miss. His reflection in the mirror behind the bar looks foreign to him. Write about the moment someone stops recognizing themselves.
In a laboratory that exists only in narrative, a scientist observes her life's work collapse into ash. The equation was beautiful but incomplete. Compose a song that moves through metaphor like a proof.
87 prompts in the rock catalog · Shuffle rotates the featured + 3 alternates together
Substyles · 5
Each substyle binds its own audit thresholds, craft paradigm, POV mode, and banned failure modes. The forge auto-detects the right substyle from your prompt and genre tag.
Rock Radio
Top admin-published rock songs from the corpus, with audio + extracted standout lines.
Load-bearing primitive
VPI
The primitive that mechanically operationalizes SA#27. Every rock lyric the forge produces is gated by this measurement.
Audit primitives · 6 deterministic + 1 Haiku-judged▾
Each runs against every rock lyric the forge produces; the load-bearing primitive is highlighted.
| Code | Name | Role | Type |
|---|---|---|---|
| VPI | Vowel-Pitch Integrity | Closed-vowel-on-chorus-peak collision rate (SA#27 axis) | DeterministicSA axis |
| RVL | Register-Vowel Landing | Chorus-wide open-vowel discipline | Deterministic |
| TTI | Title-Tension Index | Desmond Child/Mutt Lange title-tension scoring | Deterministic |
| RHC | Rhythmic Hook Contrast | Chorus rhythmically compressed vs verse | Deterministic |
| CWM | Concreteness Word Metric | Springsteen/Petty concreteness floor | Deterministic |
| GDD | Gap Design Density | Stadium response space (instrumental + short anthemic lines) | Deterministic |
| SPT | Stadium Participation Test | Haiku-judged 50,000-person-singalong test | Haiku |
Forbidden Archive · 10 failure modes
Each failure mode is cited by name in the forge prompt and flagged by the critic loop with section + reasoning. The full operational definitions live in the Forbidden Archive document.
Closed-Vowel Cliff
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Greedy Spot On Peak
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Tension-Less Title
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Hook Shadowing
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Vocal Lift Absence
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Chant Gap Absence
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Concept Drift
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Repetition Bloat
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Power-Ballad Mismatch
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Authenticity Cosplay
Flagged by the rock critic loop by canonical name. A song carrying this mode caps at B+ on the SA axis regardless of its 12-metric quality score. Operational definition catalogued in the rock Forbidden Archive — full text shipping in a follow-up build.
Calibrated against 30 verified hits
The audit primitives are calibrated so canonical rock hits score at the S+/S band. Sources include the Rolling Stone 500, Rock Hall of Fame, Grammy Hall of Fame, Library of Congress National Recording Registry, and substyle-specific canonical playlists.
Corpus license: CC BY 4.0. Lyrics not reproduced — title + artist + year + structural metadata only.
Forge a rock song
The forge applies the rock substyle profile, banned failure modes, and VPI as a pre-output gate. Output isn’t generic AI lyrics — it’s rock lyrics that pass the audit your genre demands.