Quick answer: Music metadata identifies a composition, recording, creator, publisher, owner, release, and credit. ISRC, ISWC, and IPI identify different entities and are not interchangeable.
Identifier guidance with fictional internal record labels. No sample code below is an assigned ISRC, ISWC, or IPI.
Why music metadata matters
Streaming, publishing, royalty, licensing, and discovery systems process huge catalogs. They rely on names, titles, identifiers, and ownership data to connect usage with the correct people and works.
Errors create mismatches: a creator may be listed under the wrong name or a recording may not connect to its composition.
ISRC identifies a recording
The International Standard Recording Code identifies a sound or music-video recording, rather than a composition, performer, or release product. Keep it with the artist, title, version, duration, content type, and publication date.
Use the existing code for the unchanged recording when transferring it between distributors or owners. A newly recorded performance needs its own identity. Edits, remixes, and remasters require checking the ISRC agency's guidance; not every remaster automatically receives a new code.
ISWC identifies a musical work
The International Standard Musical Work Code identifies the composition. CISAC describes it as connecting the work title and creators, including authors, composers, and arrangers.
One song may have one ISWC while multiple recordings each have their own ISRC.
IPI identifies creators and publishers
The Interested Party Information number helps distinguish songwriters, composers, and publishers within rights systems. It is valuable when names are common or represented in multiple territories.
Use the IPI tied to the exact identity in the registration. Do not substitute private account credentials.
One composition, two recordings, several people
Fictional internal records
Use internal labels while official identifiers are pending. These labels organize the catalog and must not be entered as official codes.
| Internal label | What it represents | Official identifier field |
|---|---|---|
| WORK-01 | The composition “Small Hours,” written by two people. | ISWC when assigned. |
| REC-01 | The original studio recording of WORK-01. | Its confirmed ISRC. |
| REC-02 | A new live performance of WORK-01. | Its separately assigned ISRC. |
| Writer and publisher records | The people and entities connected to WORK-01. | Confirmed IPIs for the relevant identities. |
A release product may package one or several recordings and have its own UPC or EAN. That product code does not replace recording identifiers or establish ownership.
Credits are data, not decoration
Record songwriter, producer, featured artist, engineer, mixer, mastering engineer, musician, and studio credits consistently. Verify spelling and professional names.
Creative credit and ownership are related but not identical. Someone can deserve credit without owning composition or master rights.
Correct the source record and affected destinations
Keep the confirmed title, people, rights, identifiers, and recording versions in one maintained record. Note where each value came from and when it was checked. Treat official IDs as text when using a spreadsheet so leading zeroes are preserved.
If an IPI belongs to the wrong person, confirm the correct identity with that writer or representative. Correct the relevant work registration through its process, and update the catalog record and other affected submissions. An edit in your private spreadsheet does not automatically update a distributor or society.
If an ISRC was entered against the wrong audio, identify which recording the code actually describes before submitting corrections. Do not generate replacement codes simply to hide the mismatch.
The release metadata checklist
- Song and alternate titles.
- Primary and featured artists.
- Writers and composition shares.
- Publishers, administrators, PROs, and IPIs.
- ISWC when assigned.
- ISRC for each recording.
- Master owner and licensing contact.
- Creative credits, lyrics, language, and version details.
Connect the data to the signed record using the split-sheet guide.
Frequently asked questions
Does an ISRC prove that I own the recording?
No. It identifies a recording; relevant agreements establish the ownership picture.
Should I invent an ISWC while waiting?
No. Use an internal work label and mark the official field pending. Obtain the assigned code through the relevant registration channel.
Is an IPI my private PRO account number?
No. Confirm the IPI tied to the relevant writer or publisher identity. Do not share login credentials as metadata.
Do I need a new ISRC when switching distributors?
The unchanged recording keeps its existing ISRC. Follow the transfer instructions and retain the original reference metadata.