Structural Architecture
Song shape, arc, verse progression, chorus return, and bridge revelation. Does the structure serve the story?
What good looks like
Each section has a clear job. Verses build, choruses resolve, the bridge shifts perspective. Nothing feels arbitrary.
How SongForgeAI scores it
song-structure.ts (Build 937) validates the presence, ordering, and length of verse / chorus / pre-chorus / bridge. Panel weights whether the structure supports the story or fights it.
Common failure mode
Two verses saying the same thing, a chorus that doesn't land after its setup, or a missing bridge where the song needed a shift.
What it looks like in the wild
- V1 establishes setting → V2 escalates → bridge recontextualizes → final chorus lands changed.
- Pre-chorus that compresses the verse's internal pressure and releases it into the hook.
- Bridge that moves from internal to external detail (Stolpe).
Why it’s in the Craft tier
Can this person write? Mechanics, structure, rhyme, and word choice.
The Craft tier contributes 25% to the final composite score. The tier weight is distributed across its member metrics — no single metric dominates the composite.
Other Craft metrics
Prosody & Musicality
#1Meter, stress patterns, consonant + vowel clusters, intentional silence, and breath points. Does the lyric feel good in the mouth?
Rhyme Intelligence
#3Rhyme as craft servant: internal rhyme, slant rhyme, strategic non-rhyme. Does the rhyme scheme feel intentional rather than forced?
Economy of Language
#4Every word earning its place. No filler, no padding, no lines that exist only to set up a rhyme.
The full rubric
See this metric scored against real songs
Every song forged through SongForgeAI is scored on Structure. Browse the leaderboard or forge your own to see how lines land on this axis.