ISWC · Musical Work

T-925939197-4

SOMEONE I USED TO KNOW

10 recordings

Last verified: July 6, 2026

T-925939197-4 is the International Standard Musical Work Code (ISWC) for the musical composition "SOMEONE I USED TO KNOW". 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). This work has 10 known recordings (ISRCs) indexed on Credits.fm.

Format

TPrefix

925939197Work 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.

Credit Chain

ISRC10 recordings

ISWCSOMEONE I USED TO KNOW

Previously known as

T-311281987-7

SourcesCISACMusicBrainz2 sources

Verified on

CISAC ISWC registry search

Identifier Graph

What is ISWC T-925939197-4?

T-925939197-4 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition "SOMEONE I USED TO KNOW". 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.

This work has 10 recordings (ISRCs) associated with it. Each recording represents a distinct version — such as the original, a remix, a live performance, or a cover — that shares the same underlying composition.

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T-925939197-4

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What is ISWC T-925939197-4?

T-925939197-4

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Recordings (10)

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People also ask

What is ISWC T-925939197-4?

Recordings (10)