ISRC
Song: KNOCK KNOCK
Last verified:
One ISRC for “Knock Knock” by Mac Miller is USA2P1122877. 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 2010-08-13. The underlying musical work is ISWC T-911796537-4. Written by KRISTINA ROSE MILLER, ASHE UNDERWOOD, LESTER PHILIP ALEXANDER BROWN, and others.
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USA2P1122877 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “Knock Knock” by Mac Miller. 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-911796537-4, 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.
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One ISRC for “Knock Knock” by Mac Miller is USA2P1122877. 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 2010-08-13. The underlying musical work is ISWC T-911796537-4. Written by KRISTINA ROSE MILLER, ASHE UNDERWOOD, LESTER PHILIP ALEXANDER BROWN, and others.
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