If your short-form pipeline treats “AI lyrics” and “AI remix” as interchangeable buttons, you will over-generate and under-learn from listens. A prompt spine is a typed contract for the lyric pass: it decides which variables reviewers may change later. This note frames lyric spines as an interface, then shows where a genre remix belongs—after the text graph is stable—inside WAV AI.
Music information work often studies lyrics and audio as related streams with their own evaluation problems. Open resources such as the DALI dataset (aligned lyrics with audio) make that separation explicit. Downstream product tools compress the loop, but your pipeline still needs typed steps: meaning first or arrangement first—not “more AI.”
Think of the lyric call like an endpoint:
spine = {
promise: string, # one-sentence chorus meaning
must_keep: string[], # title line / hook fragments
sections: ["verse","pre","chorus",...],
constraints: string[] # syllable budget, banned clichés, VO overlap rules
}
→ lyric_draft
→ rewrite(single_named_flaw)
→ freeze_keepers
→ (optional) remix_bed
| Field | Why it exists | Failure if omitted |
|---|---|---|
| promise | Gives reviewers a pass/fail besides “feels cool” | Endless vibe arguments |
| must_keep | Protects identity across rewrites | Chorus mutates every pass |
| sections | Forces structure over sticky one-liners | Orphan hooks with no verse job |
| constraints | Encodes picture/VO reality | Beautiful lines that do not fit the cut |
brief → build_spine → lyrics_generate → rewrite_once
→ freeze_keepers
→ remix_if_bed_gap
→ ship_max_2_candidates
Use the AI Lyrics Generator only after spine is filled. Cap rewrite to one named flaw (rhyme collision, syllable overrun, unclear promise). Multi-knob rewrites destroy causal learning.
Call the AI Music Remixer only when keepers are frozen and the remaining bug is energy, genre, or instrumental density. Preview under VO. Reject remixes that force lyric rewrites—that is a signal you unfroze the wrong layer.
Adaptation permissions are not a model parameter. Creative Commons’ CC license overview is a practical reference when the source work actually carries a CC grant; commercial releases without that grant still need clearance. Put the rights check before public export, same as any other ship gate.
It is not a bake-off of generative architectures, and it does not cite product marketing percentages. Treat lyric and remix as typed stages with explicit freeze points—then your failure logs start teaching something useful.