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  1. Home
  2. ISRCs
  3. USSM10905701
Half of My Heart album cover

ISRC

USSM10905701

Half of My Heart✓2

John MayerTaylor Swift
matched
Released 2009-01-01

Last verified: August 8, 2026

USSM10905701 is the International Standard Recording Code (ISRC) for the recording “Half of My Heart” by John Mayer, Taylor Swift, released 2009-01-01. 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-903600271-8. Written by JOHN CLAYTON MAYER.

Format

USCountry
SM1Registrant
09Year (2009)
05701Designation
Country:
ISO 3166-1 alpha-2 country code (US).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (2009):
Last two digits of the reference year (2009). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

Credit Chain

ISRCHalf of My Heart
ISWCHalf of My Heart
IPIJOHN CLAYTON MAYER

Musical Work (ISWC)

T-903600271-8Half of My Heart

People also ask

What is the ISRC for "Half of My Heart" by John Mayer?+
The ISRC for "Half of My Heart" by John Mayer, Taylor Swift is USSM10905701.
Who wrote "Half of My Heart"?+
"Half of My Heart" was written by JOHN CLAYTON MAYER. The ISWC for this composition is T-903600271-8.
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. USSM10905701 is the ISRC for this recording; T-903600271-8 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 USSM10905701?

USSM10905701 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “Half of My Heart” by John Mayer, Taylor Swift. 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-903600271-8, 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?

JOHN CLAYTON MAYERComposer
IPI: 00344733364
GOODIUM MUSIC OriginalPublisherIPI: 00669536398

Who publishes this song?

GOODIUM MUSICOriginalPublisher
IPI: 00669536398

Which contributors are credited?

0000 0001 1446 7902John Mayer

Identifier Graph

ISRCUSSM10905701ISWCT-903600271-8IPIJOHN CLAYTON MA…ISNIJohn Mayer

MLC Song Code

1001QM
Verify on MLC Portal →
SourcesMusicBrainzMLCNotes✓3 sources

Verified on

  • MusicBrainz recording record
  • MLC song record

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Songwriter profiles

JOHN CLAYTON MAYERIPI
John MayerTaylor Swift

USSM10905701 is the International Standard Recording Code (ISRC) for the recording “Half of My Heart” by John Mayer, Taylor Swift, released 2009-01-01. 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-903600271-8. Written by JOHN CLAYTON MAYER.

John Mayer, Taylor Swift