Self-contained ISRC editor that lives on the MusicBrainz release page. Reads the release’s existing ISRCs, lets you fill in the missing ones from several sources, and submits them straight to MusicBrainz.
Outdated history
I created this (with AI) and seems to work OK:
Notes:
- It will load all recordings automatically so you can observe individual lengths and dates
- Click the header Search button to invoke search across all tracks
- Once results are there, they are injected below the track input along with MB vs SX length
- It will auto-assign result if match looks legit (author and track are the same, length differs 10s at most, year is later…). Click “more” to see all results and choose from there. Click other parts to set it anyway. If anything differs it will be highlighted.
Using it with mb_MASS-ISRC from @jesus2099 that adds handy button on releases.

