ISWC · Musical Work
Specific Gravity of Smile
T-800375542-9 is an International Standard Musical Work Code (ISWC) that uniquely identifies the musical composition "Specific Gravity of Smile". ISWCs are defined by ISO 15707 and managed by CISAC. Unlike ISRCs which identify recordings, an ISWC identifies the underlying song — the melody, lyrics, and arrangement.
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