T-919403322-2

The ISWC for “I DON'T KNOW WHY” is T-919403322-2. An ISWC (International Standard Musical Work Code) uniquely identifies the underlying musical composition — melody, lyrics, and arrangement — rather than any single recording.

ISWC T-919403322-2 identifies the musical composition “I DON'T KNOW WHY”. ISWCs are defined by ISO 15707 and managed by CISAC to uniquely identify the underlying song — the melody, lyrics, and arrangement.

The credited songwriters for “I DON'T KNOW WHY” are: CHRISTENSEN, OLIVIA SOMERLYN HOLLINS, LEWIS, MICHELLE ROBIN, SCHNEIDER, CURTIS RUSSELL, SOMERLYN, OLIVIA.

Copyright in a musical work is normally split between the people who wrote it and the publishers that administer their shares, so there is rarely a single owner. Credits.fm indexes registered credits rather than legal ownership: for “I DON'T KNOW WHY” the registered writers are CHRISTENSEN, OLIVIA SOMERLYN HOLLINS, LEWIS, MICHELLE ROBIN, SCHNEIDER, CURTIS RUSSELL, SOMERLYN, OLIVIA. Publisher administration chains are recorded per writer — open a writer's IPI page to see the publishers registered against their share.

An ISWC identifies a musical work (the underlying composition — melody, lyrics, arrangement). An ISRC identifies a specific sound recording of that work. One ISWC can have many ISRCs — for example, the original recording, a remix, a live version, and a cover would each have their own ISRC but share the same ISWC.