Music industry terminology

ISRC code

Also called: International Standard Recording Code, ISRC

An ISRC code is a 12-character unique identifier assigned to a specific recording (master). The format is two-letter country code, three-character registrant code, two-digit year, and five-digit designation. ISRCs let streaming platforms, sync platforms, and royalty collection systems track exactly which recording was played even when multiple recordings share the same song title.

Every master recording you release should have an ISRC. It is how digital service providers (Spotify, Apple Music, etc.) identify your specific recording across the global music ecosystem. Without an ISRC, your recording is essentially invisible to most royalty tracking and reporting systems, which is a fancy way of saying nobody can pay you.

Why it matters

Two recordings of the same song are completely separate masters with separate rights. The Whitney Houston version and the Dolly Parton version of "I Will Always Love You" share the underlying composition (Dolly wrote it) but have different ISRCs. ISRCs are how the industry tells them apart in royalty distribution. Otherwise everybody would be fighting over the same pile.

For working composers and indie artists, every master you release needs an ISRC before it goes live anywhere. Distribution services like DistroKid, CD Baby, and TuneCore assign ISRCs automatically. If you are releasing through your own channels (a sync platform, a library, your website), you need to source ISRCs yourself, and yes that involves a small amount of paperwork.

How it works

ISRC codes are issued by national agencies. In the US, the agency is the RIAA. In the UK, it is PPL. Each country has its own. To get ISRCs, an artist or label registers as a registrant (a one-time process that issues a three-character registrant code) and then issues sequential ISRCs themselves under that registrant.

A typical ISRC: US-RGS-25-12345. US is the country (United States). RGS is the registrant code. 25 is the year (2025). 12345 is the unique designation for that specific recording.

Once issued, the ISRC stays with that recording forever, across every platform, every reissue, and every license. Different masters of the same song get different ISRCs. The same master, delivered to multiple platforms, keeps the same ISRC. The code outlives most relationships in the industry.

Examples

An indie composer releases an album of 12 instrumental tracks for sync licensing. Each track gets its own ISRC at upload time. When a sync placement happens, the cue sheet references the ISRC, ensuring the right recording earns the royalty.
A library composer rerecords an old cue with a slightly different mix for a new client. The new mix is a new master and gets a new ISRC. The original ISRC stays with the original recording. Two recordings, two codes, no confusion.
A recording is licensed to a film. The film's cue sheet lists the song title and the ISRC. PROs use the ISRC to confirm which exact recording was used and route royalties to the correct rights holders. Nobody is guessing.

Common mistakes

●Not getting an ISRC at all. Releasing music without an ISRC means streaming platforms cannot uniquely identify your recording in their reporting. Royalties from those plays may not flow correctly, which is industry shorthand for "may not flow at all."
●Reusing an ISRC for a remixed or rerecorded version. Different masters require different ISRCs. Reusing the same ISRC across versions confuses every system that tracks plays, and you do not want a confused royalty system.
●Confusing ISRC with ISWC. ISRC identifies the recording (master). ISWC identifies the underlying composition. They are two different codes for the two different sets of rights. They are also a great way to feel completely lost in your first publishing meeting.
●Letting your distributor own your ISRCs. Some distributors issue ISRCs under their own registrant code, which means the codes stay with the distributor if you ever leave. For long-term catalog control, register your own registrant code through your country's ISRC agency.

How DropCue handles this

DropCue stores ISRC codes in track metadata and includes them on every download so the supervisor or production sees the ISRC alongside the audio. When a placement is made, the cue sheet has the ISRC ready without an additional email.