ISWC · Musical Work

T-310157394-4

DIDN'T KNOW WHAT I WAS MISSING

Last verified: September 14, 2026

The ISWC for “DIDN'T KNOW WHAT I WAS MISSING” is T-310157394-4. 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

310157394Work 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.

SourcesCISACMusicBrainzMLC3 sources

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What is ISWC T-310157394-4?

T-310157394-4 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition “DIDN'T KNOW WHAT I WAS MISSING”. 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-310157394-4

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What is ISWC T-310157394-4?

T-310157394-4

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What is ISWC T-310157394-4?