ISWC · Musical Work

T-904958594-6

Last verified: July 9, 2026

T-904958594-6 is the International Standard Musical Work Code (ISWC) for this musical composition. ISWCs are ISO 15707 identifiers managed by CISAC; they identify the underlying song — its melody, lyrics, and arrangement — rather than any single recording. One composition can have many recordings (ISRCs).

Format

TPrefix

904958594Work number

6Check digit

Prefix:: "T" = musical work; "W" = work in progress.
Work number:: 9-digit unique work number assigned by CISAC.
Check digit:: ISO 7064 Mod 11-2 check digit that validates the rest of the code.

Previously known as

T-906304932-1

SourcesCISACMusicBrainz2 sources

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What is ISWC T-904958594-6?

T-904958594-6 is an International Standard Musical Work Code (ISWC) that uniquely identifies this musical composition. ISWCs are defined by ISO 15707 and managed by CISAC. Unlike ISRCs which identify recordings, an ISWC identifies the underlying song — the melody, lyrics, and arrangement.

T-904958594-6

Format

Previously known as

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What is ISWC T-904958594-6?

T-904958594-6

Format

Previously known as

Verified on

People also ask

What is ISWC T-904958594-6?