ISWC · Musical Work

T-070902771-3

I Don’t Know Why

17 recordings

Last verified: July 6, 2026

T-070902771-3 is the International Standard Musical Work Code (ISWC) for the musical composition "I Don’t Know Why". 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 17 known recordings (ISRCs) indexed on Credits.fm.

Format

TPrefix

070902771Work number

3Check 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

ISRC17 recordings

ISWCI Don’t Know Why

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Releases (UPC)

886444435703 886447326534 886445453324 886978451521 888751080720 888751471429 9311532303509 9399601969122 9399746270121

SourcesMusicBrainzCISAC2 sources

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Identifier Graph

What is ISWC T-070902771-3?

T-070902771-3 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition "I Don’t Know Why". 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 17 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.

T-070902771-3

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What is ISWC T-070902771-3?

T-070902771-3

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Recordings (17)

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People also ask

What is ISWC T-070902771-3?

Recordings (17)