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Circles on Circles album cover

Circles on Circles✓2

ISRC

US72W1923508

Song: CIRCLES ON CIRCLES

Caspian
matched
Released 2023-06-26

Last verified: October 9, 2026

One ISRC for “Circles on Circles” by Caspian is US72W1923508. 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. Released 2023-06-26. The underlying musical work is ISWC T9321928932.

Format

USCountry
72WRegistrant
19Year (2019)
23508Designation
Country:
ISO 3166-1 alpha-2 country code (US).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (2019):
Last two digits of the reference year (2019). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

Credit Chain

ISRCCircles on Circles
ISWCCIRCLES ON CIRCLES

Musical Work (ISWC)

T9321928932CIRCLES ON CIRCLES

People also ask

What is one ISRC for “Circles on Circles” by Caspian?+
One ISRC for “Circles on Circles” by Caspian is US72W1923508.
What is the ISWC for “CIRCLES ON CIRCLES”?+
The ISWC for “CIRCLES ON CIRCLES” is T9321928932. This recording is titled “Circles on Circles”. The ISRC US72W1923508 identifies this specific recording; the ISWC identifies the underlying musical work shared by all versions.
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. US72W1923508 is the ISRC for this recording; T9321928932 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 US72W1923508?

US72W1923508 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “Circles on Circles” by Caspian. 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 T9321928932, 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.

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MLC Song Code

CA3PYN
Verify on MLC Portal →
SourcesMusicBrainzMLC✓2 sources

Verified on

  • MusicBrainz recording record
  • MLC song record
Caspian

One ISRC for “Circles on Circles” by Caspian is US72W1923508. 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. Released 2023-06-26. The underlying musical work is ISWC T9321928932.

Caspian

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