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  1. Home
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  3. US4B90462807
I Wish I Knew What I Know Now album cover

I Wish I Knew What I Know Now✓2

ISRC

US4B90462807

Song: My Younger Days

Junior WellsBuddy GuyOtis Spann
matched
Released 1969-01-01

Last verified: September 23, 2026

The ISRC for “I Wish I Knew What I Know Now” by Junior Wells is US4B90462807. 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 1969-01-01. The underlying musical work is ISWC T-070904826-9.

Format

USCountry
4B9Registrant
04Year (2004)
62807Designation
Country:
ISO 3166-1 alpha-2 country code (US).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (2004):
Last two digits of the reference year (2004). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

Credit Chain

ISRCI Wish I Knew What I Know Now
ISWCMy Younger Days

Musical Work (ISWC)

T-070904826-9My Younger Days

People also ask

What is the ISRC for “I Wish I Knew What I Know Now” by Junior Wells?+
The ISRC for “I Wish I Knew What I Know Now” by Junior Wells is US4B90462807.
What is the ISWC for “My Younger Days”?+
The ISWC for “My Younger Days” is T-070904826-9. This recording is titled “I Wish I Knew What I Know Now”. The ISRC US4B90462807 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. US4B90462807 is the ISRC for this recording; T-070904826-9 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 US4B90462807?

US4B90462807 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “I Wish I Knew What I Know Now” by Junior Wells, Buddy Guy, Otis Spann. 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-070904826-9, 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

Credits Graph

MLC Song Code

I35840
Verify on MLC Portal →
SourcesMusicBrainzMLC✓2 sources

Verified on

  • MusicBrainz recording record
  • MLC song record
Junior WellsBuddy GuyOtis Spann

The ISRC for “I Wish I Knew What I Know Now” by Junior Wells is US4B90462807. 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 1969-01-01. The underlying musical work is ISWC T-070904826-9.

Junior Wells, Buddy Guy, Otis Spann

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