ISWC · Musical Work

T-070041550-4

DIDN T YOU CHANGE

Last verified: November 6, 2026

The ISWC for “DIDN T YOU CHANGE” is T-070041550-4. 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

070041550Work number

4Check 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.

SourcesCISACMLCMusicBrainz3 sources

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What is ISWC T-070041550-4?

T-070041550-4 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition “DIDN T YOU CHANGE”. 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.

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T-070041550-4

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What is ISWC T-070041550-4?

T-070041550-4

Format

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People also ask

What is ISWC T-070041550-4?