skills/music/references/qa.md

# QA before delivery

## Blocking
| Check | Fails when |
|---|---|
| Duration match | Doesn't match the footage it scores |
| Vocal presence | Vocals in a bed meant to sit under a voiceover |

## Quality
| Check | Fails when |
|---|---|
| Loop seam | An audible join when looped |
| Dynamic range | Too busy to sit under dialogue |
| Arc | A 30s ad bed with no build |