ISWC · Musical Work

T-305406519-5

HAPPY BIRTHDAY - YOU'RE ONE YEAR OLDIE

1 recording

Last verified: October 25, 2026

The ISWC for “HAPPY BIRTHDAY - YOU'RE ONE YEAR OLDIE” is T-305406519-5. 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 1 known recording (ISRCs) indexed on Credits.fm.

Format

TPrefix

305406519Work number

5Check 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

ISRC1 recording

ISWCHAPPY BIRTHDAY - YOU'RE ONE YEAR OLDIE

SourcesCISACMLCMusicBrainz3 sources

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What is ISWC T-305406519-5?

T-305406519-5 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition “HAPPY BIRTHDAY - YOU'RE ONE YEAR OLDIE”. 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 1 recording (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.

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T-305406519-5

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What is ISWC T-305406519-5?

T-305406519-5

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Recordings (1)

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People also ask

What is ISWC T-305406519-5?

Recordings (1)