ISRC
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The ISRC for this recording (“ラストレター -karaoke-”) is JPN100901504. 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 2009-11-11. The underlying musical work is ISWC T9057425782.
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JPN100901504 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “ラストレター -karaoke-” by Lil’B. 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 T9057425782, 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.
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MLC Song Code
The ISRC for this recording (“ラストレター -karaoke-”) is JPN100901504. 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 2009-11-11. The underlying musical work is ISWC T9057425782.
