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  1. Home
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  3. US4NP0900041
Heavy Days album cover

Heavy Days✓2

ISRC

US4NP0900041

Song: HEAVY DAYS

JEFF the Brotherhood
matched
Released 2009-10-13

Last verified: September 8, 2026

One ISRC for “Heavy Days” by JEFF the Brotherhood is US4NP0900041. 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 2009-10-13. The underlying musical work is ISWC T-902324780-5.

Format

USCountry
4NPRegistrant
09Year (2009)
00041Designation
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

ISRCHeavy Days
ISWCHEAVY DAYS

Musical Work (ISWC)

T-902324780-5HEAVY DAYS

People also ask

What is one ISRC for “Heavy Days” by JEFF the Brotherhood?+
One ISRC for “Heavy Days” by JEFF the Brotherhood is US4NP0900041.
What is the ISWC for “HEAVY DAYS”?+
The ISWC for “HEAVY DAYS” is T-902324780-5. This recording is titled “Heavy Days”. The ISRC US4NP0900041 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. US4NP0900041 is the ISRC for this recording; T-902324780-5 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 US4NP0900041?

US4NP0900041 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “Heavy Days” by JEFF the Brotherhood. 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-902324780-5, 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

JEFF the Brotherhood

One ISRC for “Heavy Days” by JEFF the Brotherhood is US4NP0900041. 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 2009-10-13. The underlying musical work is ISWC T-902324780-5.

JEFF the Brotherhood

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MLC Song Code

HC0M4R
Verify on MLC Portal →
SourcesMusicBrainzMLCNotes✓3 sources

Verified on

  • MusicBrainz recording record
  • MLC song record

Related

Other versions of this workView all on iswc.fm

HEAVY DAYSUS33X1008802
HEAVY DAYSUS33X1410002
HEAVY DAYSUSAQ41001326

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