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  3. USUM72121641

ISRC

USUM72121641

Thinking of You✓2

Katy Perry
matched

Last verified: July 12, 2026

USUM72121641 is the International Standard Recording Code (ISRC) for the recording “Thinking of You” by Katy Perry. 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-901319977-4. Written by KATY PERRY, KATHERYN ELIZABETH HUDSON.

Format

USCountry
UM7Registrant
21Year (2021)
21641Designation
Country:
ISO 3166-1 alpha-2 country code (US).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (2021):
Last two digits of the reference year (2021). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

Credit Chain

ISRCThinking of You
ISWCThinking of You

Musical Work (ISWC)

T-901319977-4Thinking of You

People also ask

What is the ISRC for "Thinking of You" by Katy Perry?+
The ISRC for "Thinking of You" by Katy Perry is USUM72121641.
Who wrote "Thinking of You"?+
"Thinking of You" was written by KATY PERRY, KATHERYN ELIZABETH HUDSON. The ISWC for this composition is T-901319977-4.
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. USUM72121641 is the ISRC for this recording; T-901319977-4 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 USUM72121641?

USUM72121641 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “Thinking of You” by Katy Perry. 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-901319977-4, 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?

KATY PERRYComposerLyricist
WHEN I'M RICH YOU'LL BE MY BITCH OriginalPublisherIPI: 00514955051
KATHERYN ELIZABETH HUDSONComposerLyricist
IPI: 00292555933
WHEN I'M RICH YOU'LL BE MY BITCH OriginalPublisherIPI: 00514955051

Who publishes this song?

WHEN I'M RICH YOU'LL BE MY BITCHOriginalPublisher
IPI: 00514955051

Which contributors are credited?

0000 0000 7371 737XKATHERYN ELIZABETH HUDSON

Identifier Graph

ISRCUSUM72121641ISWCT-901319977-4IPIKATHERYN ELIZAB…ISNIKATHERYN ELIZAB…
SourcesMusicBrainzMLC✓2 sources

Verified on

  • MusicBrainz recording record
Katy Perry

USUM72121641 is the International Standard Recording Code (ISRC) for the recording “Thinking of You” by Katy Perry. 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-901319977-4. Written by KATY PERRY, KATHERYN ELIZABETH HUDSON.

Katy Perry

Related

Other versions of this workView all on iswc.fm

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Songwriter profiles

KATHERYN ELIZABETH HUDSONIPI