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  1. Home
  2. ISRCs
  3. USUG12100628
The Best Day (Taylor’s version) album cover

ISRC

USUG12100628

The Best Day (Taylor’s version)✓2

Song: The Best Day

Taylor Swift
matched
Released 2021-01-01

Last verified: July 22, 2026

USUG12100628 is the International Standard Recording Code (ISRC) for the recording “The Best Day (Taylor’s version)” by Taylor Swift, released 2021-01-01. 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-904763004-6.

Format

USCountry
UG1Registrant
21Year (2021)
00628Designation
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

ISRCThe Best Day (Taylor’s version)
ISWCThe Best Day

Musical Work (ISWC)

T-904763004-6The Best Day

Credits Graph

MLC Song Code

B3567P
Verify on MLC Portal →
SourcesMusicBrainzMLC✓2 sources

Verified on

  • MusicBrainz recording record
  • MLC song record

People also ask

What is the ISRC for "The Best Day (Taylor’s version)" by Taylor Swift?+
The ISRC for "The Best Day (Taylor’s version)" by Taylor Swift is USUG12100628.
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. USUG12100628 is the ISRC for this recording; T-904763004-6 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 USUG12100628?

USUG12100628 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “The Best Day (Taylor’s version)” by 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-904763004-6, 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

Related

Other versions of this workView all on iswc.fm

THE BEST DAY (TAYLOR SWIFT)

VARIOUS ARTISTS

USCJY0803326
THE BEST DAY - COMMENTARY

TAYLOR SWIFT

USCJY1831921
THE BEST DAY (KARAOKE VERSION WITH BACKING VOCALS)

TAYLOR SWIFT

USCJY0903494
The Best Day

Taylor Swift

USCJY0903500
The Best Day (Taylor’s version)

Taylor Swift

USUG12101928

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USUG12100628 is the International Standard Recording Code (ISRC) for the recording “The Best Day (Taylor’s version)” by Taylor Swift, released 2021-01-01. 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-904763004-6.

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