The short answer: Metadata, ISRCs, and credits are the paperwork layer of a release — the text, codes, and names that travel with your song everywhere it lands. Get them right and your track is searchable, correctly credited, and paying everyone it should; get them wrong and you're chasing royalties, fixing typos across fifty stores, and watching a great song underperform for reasons that have nothing to do with the music. Setting this up cleanly before you deliver to a distributor is one of the highest-leverage hours you'll spend on any release.

Get Your Identifiers Straight First

Two codes do most of the heavy lifting, and people mix them up constantly.

  • ISRC (International Standard Recording Code) identifies a specific recording. Format is CC-XXX-YY-NNNNN — country, registrant, year, and a unique serial. Every distinct master gets its own: the single, the radio edit, the sped-up version, and a remaster from three years later are four different ISRCs. It stays with that recording for life and follows it across every platform and every re-release.
  • UPC/EAN identifies a product — the single, EP, or album as a package. One release, one UPC. Add a bonus track later and it's technically a new product with a new UPC.

Most distributors (DistroKid, TuneCore, CD Baby, Symphonic, and the like) will assign ISRCs and a UPC for free at upload. That's fine for getting started. But if you're building a catalog or running a small label, apply for your own ISRC registrant prefix through your national agency (in the US that's the RIAA-designated manager; other countries have their own IFPI-linked body). Owning your prefix means you control the codes, keep them consistent across distributors, and never lose track of which recording is which when you switch services.

Myth: "A cover I recorded needs the original song's ISRC." No. ISRCs mark recordings, not compositions. Your recording of someone else's song is a brand-new master and gets its own fresh ISRC. What the original owns is the composition — a separate layer (the ISWC and publishing side) that you clear with a mechanical license, not by borrowing a code.

Write Metadata Like a Librarian, Not a Poster Designer

Store metadata is data, not art. Platforms parse it literally, and their style guides are strict — sloppy fields get releases rejected or, worse, quietly mis-filed.

  1. Artist name: pick one exact spelling and never deviate. Same capitalization, same spacing, every single time. "Lil Jon" on one release and "LIL JON" on the next can fragment your profile into two artists with split streams. Claim your Spotify for Artists and Apple Music for Artists profiles early so your releases route to one place.
  2. Track titles: clean base title, versions in parentheses. "Nightdrive" — then "Nightdrive (Radio Edit)", "Nightdrive (feat. Maya Cruz)". Don't stuff "prod. by", hype, or your own name into the title field. Featured artists go in the dedicated feature field and in parentheses; producers do not belong in the title.
  3. No promo text anywhere. No "OUT NOW", no emojis, no "Official Audio", no URLs. These are the fastest route to rejection.
  4. Genre and language: be honest and specific. Genre feeds algorithmic placement; a mislabeled genre buries you in the wrong playlists' candidate pools.
  5. Explicit flag: set it accurately per track. Mark the clean and explicit versions correctly — getting this wrong can pull a track from editorial consideration.

Match capitalization and featured-artist formatting to the platform style guides (Apple's is the strictest and a safe default). Consistency across the whole release matters more than any single stylistic choice.

Credits Are How People — and Money — Find the Work

Credits used to be liner notes nobody read. In 2026 they're structured data that drives discovery and royalty splits, and platforms surface them directly in the app.

  • Split the roles. Songwriter (the composition), producer, mixer, mastering engineer, performers, featured artists — each is a distinct credit. Don't collapse "made the whole thing" into one line.
  • Register the composition side separately. Distribution handles the recording. It does not register your songwriting. Sign every songwriter up with a PRO (ASCAP, BMI, SOCAN, PRS, etc.) and, if there's meaningful streaming, a publishing administrator so mechanical royalties actually get collected. In the US, make sure writers are registered with the MLC — a large pool of streaming mechanicals goes unclaimed simply because nobody registered.
  • Agree splits in writing before release. A one-page split sheet — names, roles, percentages, contact info, signatures — signed the day the song is finished prevents the most common and most bitter disputes in music. Do it while everyone's happy.
  • Deliver rich credits to your distributor if it supports them (many now push to Spotify's songwriter pages and Apple's credits view). Full, accurate credits are also what gets your session players and engineers hired again.

A Pre-Delivery Checklist

Run this before you hit upload:

  1. One consistent artist name, spelled and capitalized identically across every field.
  2. ISRC assigned to each recording; UPC assigned to the release.
  3. Titles clean, versions in parentheses, features in the feature field.
  4. Explicit flags set per track.
  5. Genre, language, and release date correct — and set the date far enough out (typically a few weeks) to be eligible for editorial playlist pitching.
  6. Split sheet signed; every songwriter registered with a PRO and, in the US, the MLC.
  7. Cover art meets spec (square, high-resolution, no unlicensed logos or web addresses).
  8. Master audio delivered at the highest quality you have — a clean, loud-enough, properly mastered file, not an MP3 bounce.
  9. Credits filled out fully: producer, mixer, mastering engineer, performers.
  10. Everything double-checked, because fixing metadata after release means a slow correction across every store.

When You Want It to Sound the Part

Clean metadata gets your release found and paid. What makes people stay is the sound — and that's the half no code can fix. If you're setting up a release and want the master to hold up next to anything on the playlist it lands in, that's where I come in. Mixing, mastering, and production are handled case-by-case depending on the song and where you're taking it, so the best move is to reach out through the contact page and book a call. Bring the record; we'll make sure the thing your perfect metadata is pointing at actually delivers.