ISWC · Musical Work

T-305889433-6

IM HOLDING ON WHEN I SHOULD BE LETT

Last verified: February 15, 2026

The ISWC for “IM HOLDING ON WHEN I SHOULD BE LETT” is T-305889433-6. 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

305889433Work number

6Check 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.

SourcesCISACMLC2 sources

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What is ISWC T-305889433-6?

T-305889433-6 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition “IM HOLDING ON WHEN I SHOULD BE LETT”. 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-305889433-6

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What is ISWC T-305889433-6?

T-305889433-6

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People also ask

What is ISWC T-305889433-6?