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  1. Home
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  3. USUM72100346
I Left My Heart in San Francisco album cover

I Left My Heart in San Francisco✓2

ISRC

USUM72100346
Frank Zappa
matched
Released 2021-01-01

Last verified: September 15, 2026

One ISRC for “I Left My Heart in San Francisco” by Frank Zappa is USUM72100346. 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 2021-01-01. The underlying musical work is ISWC T-070.907.950-4.

Format

USCountry
UM7Registrant
21Year (2021)
00346Designation
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

ISRCI Left My Heart in San Francisco
ISWCI Left My Heart in San Francisco

Musical Work (ISWC)

T-070.907.950-4I Left My Heart in San Francisco

People also ask

What is one ISRC for “I Left My Heart in San Francisco” by Frank Zappa?+
One ISRC for “I Left My Heart in San Francisco” by Frank Zappa is USUM72100346.
What is the ISWC for “I Left My Heart in San Francisco”?+
The ISWC for “I Left My Heart in San Francisco” is T-070.907.950-4. The ISRC USUM72100346 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. USUM72100346 is the ISRC for this recording; T-070.907.950-4 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 USUM72100346?

USUM72100346 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “I Left My Heart in San Francisco” by Frank Zappa. 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-070.907.950-4, 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

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MLC Song Code

I21070
Verify on MLC Portal →
SourcesMusicBrainzMLC✓2 sources

Verified on

  • MusicBrainz recording record
  • MLC song record
Frank Zappa

One ISRC for “I Left My Heart in San Francisco” by Frank Zappa is USUM72100346. 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 2021-01-01. The underlying musical work is ISWC T-070.907.950-4.

Frank Zappa

Related

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