ISWC · Musical Work

T-070266921-3

I Wonder Why

20 recordings

Last verified: February 15, 2026

The ISWC for “I Wonder Why” is T-070266921-3. 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 20 known recordings (ISRCs) indexed on Credits.fm.

Format

TPrefix

070266921Work 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

ISRC20 recordings

ISWCI Wonder Why

What other identifiers does this connect to?

Songwriters/Publishers (IPI)

00128960945 00129797916 00127912181

Creative Contributors (ISNI)

0000 0001 1037 9606

SourcesMusicBrainzMusicBrainzNotes CreditsCISAC4 sources

Verified on

CISAC ISWC registry search

Identifier Graph

What is ISWC T-070266921-3?

T-070266921-3 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition “I Wonder 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 20 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-070266921-3

Format

What other identifiers does this connect to?

Verified on

People also ask

What is ISWC T-070266921-3?

T-070266921-3

Format

What other identifiers does this connect to?

Which releases contain this work? (54)

Recordings (20)

Who are the artists on this work?

Verified on

People also ask

What is ISWC T-070266921-3?

Which releases contain this work? (54)

Recordings (20)

Who are the artists on this work?