ISWC · Musical Work

T-304071438-9

RELAXED HOLIDAYS UNDERSCORE VERSION 1 (UNDERSCORE

Last verified: February 15, 2026

The ISWC for “RELAXED HOLIDAYS UNDERSCORE VERSION 1 (UNDERSCORE” is T-304071438-9. 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

304071438Work number

9Check 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-304071438-9?

T-304071438-9 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition “RELAXED HOLIDAYS UNDERSCORE VERSION 1 (UNDERSCORE”. 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-304071438-9

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What is ISWC T-304071438-9?

T-304071438-9

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What is ISWC T-304071438-9?