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  1. Home
  2. ISWCs
  3. T-071521621-9

ISWC · Musical Work

T-071521621-9

You Know Who I Am

4 recordings

Last verified: February 15, 2026

T-071521621-9 is the International Standard Musical Work Code (ISWC) for the musical composition "You Know Who I Am". 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 4 known recordings (ISRCs) indexed on Credits.fm.

Format

TPrefix
071521621Work 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.

Credit Chain

ISRC4 recordings
ISWCYou Know Who I Am

What other identifiers does this connect to?

Songwriters/Publishers (IPI)

00006457004

Creative Contributors (ISNI)

0000 0001 1027 3481
SourcesMusicBrainzNotes CreditsMusicBrainzCISAC✓4 sources

Verified on

  • CISAC ISWC registry search

Identifier Graph

ISWCYou Know Who I …ISRCUSSM10607487ISRCUSSM11104517ISRCUSSM19917388ISRCUSUM70500329

People also ask

What is ISWC T-071521621-9?+
ISWC T-071521621-9 identifies the musical composition "You Know Who I Am". ISWCs are defined by ISO 15707 and managed by CISAC to uniquely identify the underlying song — the melody, lyrics, and arrangement.
How many recordings use ISWC T-071521621-9?+
ISWC T-071521621-9 has 4 recordings (ISRCs) associated with it. Each recording is a distinct version — such as the original, a remix, a live performance, or a cover — that shares the same underlying composition.
How is an ISWC different from an ISRC?+
An ISWC identifies a musical work (the underlying composition — melody, lyrics, arrangement). An ISRC identifies a specific sound recording of that work. One ISWC can have many ISRCs — for example, the original recording, a remix, a live version, and a cover would each have their own ISRC but share the same ISWC.

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What is ISWC T-071521621-9?

T-071521621-9 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition "You Know Who I Am". 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 4 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.

Learn more about ISWCs · Powered by Notes.fm

Which releases contain this work? (1)

Live Songs

Leonard Cohen

0907715285132009-01-01

Recordings (4)

1
You Know Who I Am

Leonard Cohen

USSM11104517
2
You Know Who I Am

Leonard Cohen

USSM19917388
3
You Know Who I Am

Mama Cass

USUM70500329
4
Nothing to One (You Know Who I Am)

Leonard Cohen

USSM10607487

Who are the artists on this work?

Leonard Cohen

MLC Song Code

Y40150
Verify on MLC Portal →