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  1. Home
  2. ISRCs
  3. US58L1768505
BLUE MARCH IMPROVISATION album cover

ISRC

US58L1768505

BLUE MARCH IMPROVISATION

matched

Last verified: August 9, 2026

US58L1768505 is the International Standard Recording Code (ISRC) for the recording “BLUE MARCH IMPROVISATION”. 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 T9230907489. Written by MARK STEED FOSSON.

Format

USCountry
58LRegistrant
17Year (2017)
68505Designation
Country:
ISO 3166-1 alpha-2 country code (US).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (2017):
Last two digits of the reference year (2017). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

Credit Chain

ISRCBLUE MARCH IMPROVISATION
ISWCBLUE MARCH IMPROVISATION
IPIMARK STEED FOSSON

Musical Work (ISWC)

T9230907489BLUE MARCH IMPROVISATION

People also ask

What is the ISRC for "BLUE MARCH IMPROVISATION"?+
The ISRC for "BLUE MARCH IMPROVISATION" is US58L1768505.
Who wrote "BLUE MARCH IMPROVISATION"?+
"BLUE MARCH IMPROVISATION" was written by MARK STEED FOSSON. The ISWC for this composition is T9230907489.
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. US58L1768505 is the ISRC for this recording; T9230907489 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 US58L1768505?

US58L1768505 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “BLUE MARCH IMPROVISATION”. 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 T9230907489, 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?

MARK STEED FOSSONComposerLyricist
IPI: 00201582310

Identifier Graph

ISRCUS58L1768505ISWCT9230907489IPIMARK STEED FOSS…

MLC Song Code

BA37AQ
Verify on MLC Portal →
SourcesMLC

Verified on

  • MusicBrainz recording record
  • MLC song record

Related

Songwriter profiles

MARK STEED FOSSONIPI

US58L1768505 is the International Standard Recording Code (ISRC) for the recording “BLUE MARCH IMPROVISATION”. 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 T9230907489. Written by MARK STEED FOSSON.