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  1. Home
  2. ISRCs
  3. USIR19915138
What’s the Difference album cover

ISRC

USIR19915138

What’s the Difference✓2

Dr. DreEminemXzibit
matched
Released 1999-01-01

Last verified: July 15, 2026

USIR19915138 is the International Standard Recording Code (ISRC) for the recording “What’s the Difference” by Dr. Dre, Eminem, Xzibit, released 1999-01-01. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC. The underlying musical work is ISWC T-904632829-4. Written by CHARLES AZNAVOUR, RICHARD S III VICK, STEFAN HARRIS, and others.

Format

USCountry
IR1Registrant
99Year (1999)
15138Designation
Country:
ISO 3166-1 alpha-2 country code (US).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (1999):
Last two digits of the reference year (1999). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

Credit Chain

ISRCWhat’s the Difference
ISWCWhat’s the Difference
IPICHARLES AZNAVOUR

Musical Work (ISWC)

T-904632829-4What’s the Difference

People also ask

What is the ISRC for "What’s the Difference" by Dr. Dre?+
The ISRC for "What’s the Difference" by Dr. Dre, Eminem, Xzibit is USIR19915138.
Who wrote "What’s the Difference"?+
"What’s the Difference" was written by CHARLES AZNAVOUR, RICHARD S III VICK, STEFAN HARRIS, RICHARD BEMBERY, ALVIN JOYNER, MELVIN BRADFORD, MARSHALL B. MATHERS III. The ISWC for this composition is T-904632829-4.
What is an ISRC and what does it tell you?+
An ISRC (International Standard Recording Code) is a 12-character ISO 3901 identifier that uniquely tags a specific sound recording. The first two characters are the country code, the next three are the registrant (label or distributor), the next two are the year, and the last five are a unique recording number.
Is the ISRC the same as the ISWC?+
No. The ISRC identifies a specific recording, while the ISWC identifies the underlying musical composition. USIR19915138 is the ISRC for this recording; T-904632829-4 is the ISWC for the composition it is a recording of. One composition (ISWC) can have many recordings (ISRCs) — originals, remixes, live versions, and covers each get their own ISRC but share the same ISWC.

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What is ISRC USIR19915138?

USIR19915138 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “What’s the Difference” by Dr. Dre, Eminem, Xzibit. ISRCs are 12-character alphanumeric codes defined by ISO 3901, used globally by streaming platforms, record labels, and rights organizations to track plays and distribute royalties.

This recording is linked to the musical work T-904632829-4, which represents the underlying composition. Multiple recordings can share the same musical work — for example, an original version, a remix, and a cover would each have their own ISRC but reference the same ISWC.

Learn more about ISRCs · Powered by Notes.fm

Who wrote this song?

CHARLES AZNAVOURComposerLyricist
IPI: 00001711935
RICHARD S III VICKComposerLyricist
IPI: 00182275073
STEFAN HARRISComposerLyricist
RICHARD BEMBERYComposerLyricist
ALVIN JOYNERComposerLyricist
MELVIN BRADFORDComposerLyricist
IPI: 00340290888
MARSHALL B. MATHERS IIIComposerLyricist
IPI: 00354929235

Which contributors are credited?

0000 0001 2320 9016CHARLES AZNAVOUR0000 0001 1769 9370Eminem0000 0003 6861 1900Eminem

Identifier Graph

ISRCUSIR19915138ISWCT-904632829-4IPICHARLES AZNAVOURIPIRICHARD S III V…IPIMELVIN BRADFORDIPIMARSHALL B. MAT…ISNICHARLES AZNAVOURISNIEminemISNIEminem

MLC Song Code

W14240
Verify on MLC Portal →
SourcesMusicBrainzMLC✓2 sources

Verified on

  • MusicBrainz recording record
  • MLC song record
Dr. DreEminemXzibit

USIR19915138 is the International Standard Recording Code (ISRC) for the recording “What’s the Difference” by Dr. Dre, Eminem, Xzibit, released 1999-01-01. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC. The underlying musical work is ISWC T-904632829-4. Written by CHARLES AZNAVOUR, RICHARD S III VICK, STEFAN HARRIS, and others.

Dr. Dre, Eminem, Xzibit

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Songwriter profiles

CHARLES AZNAVOURIPIRICHARD S III VICKIPIMELVIN BRADFORDIPIMARSHALL B. MATHERS IIIIPI