limbo/ QA

Limbo QA

Quality control for music releases, done before you ship.

Catch covers, metadata, and audio issues the moment a release leaves the studio — not when a store rejects it.

The problem

Releases fail at the store, not at the studio.

Cover art with hidden text, misspelled tracks, silent intros, version tags written the wrong way, audio that doesn't match the artist. Every rejection is a release that misses its date, a campaign that loses momentum, and a catalog team that has to chase a fix instead of moving forward.

Manual review doesn't scale. It's slow, inconsistent between reviewers, and the rules change every quarter as stores update their guidelines.

The solution

Every release, checked the same way, in minutes.

Limbo QA takes a release — cover, metadata, and audio — and runs a full quality pass against the rules that actually matter to the stores you deliver to. You get back a structured report with every issue flagged, ranked, and explained.

It runs the same checks the same way for every album in your catalog, so the reports you hand to your label managers are consistent today, tomorrow, and a year from now.

What gets checked

A full QA pass on every release.

Cover image review

Flags explicit content, store-prohibited symbols, low resolution, color issues, and anything that won't pass a visual moderation pass.

Text on cover

Reads every word on the cover, compares it against the album metadata, and surfaces unauthorized URLs, social handles, contact info, and other text that stores reject.

Metadata validation

Verifies titles, ISRCs, version tags, P-line and C-line formatting, featured artist placement, and the rest of the structural rules stores expect.

Spell check

Catches typos and broken text across Latin, Cyrillic, CJK, Arabic, and other scripts — without flagging legitimate words in any of them.

Audio silence

Detects silent intros, silent outros, and unexpected silent gaps inside the track that shouldn't be there.

AI vocal detection

Identifies tracks with synthetic or AI-generated vocals so you can label, route, or hold them according to your policy.

Cover version detection

Compares the audio against a global reference catalog and flags covers, samples, and unauthorized reuse before they reach a store.

Store compliance review

Every release is cross-checked against current store specifications so the report reflects the rules that are in force right now, not the ones from last year.

How it works

Three steps, no integration babysitting.

01

Send the release

Hand off the album with its cover, metadata, and audio files. One request per release.

02

Checks run in parallel

Image, metadata, and audio checks run side by side. You're not waiting on a queue.

03

Get the report

A structured report lands back with every finding, severity, and the suggested fix. Plug it into your catalog tool, your delivery flow, or your reviewer dashboard.

Who it's for

Built for teams that ship music at volume.

Labels Standardize QA across imprints and reviewers. Replace inconsistent manual passes with one shared bar.

Distributors Catch issues at ingest, before deliveries fan out. Reduce rejections, takedowns, and rework.

Aggregators Offer a quality layer your competitors don't. Give artists feedback the moment they upload.

Publishers Verify metadata correctness on every release before it leaves your system.

Ready to see it on your own releases?

Try the sandbox with a real album, or read the integration guide to plan the rollout with your team.