Quadrophenia
Quadrophenia was a double album released by The Who on October 19, 1973 (see 1973 in music), one of the group's two full-scale rock operas (except in a conventional use of the word "opera" as Quadrophenia is mostly a monoglot work rather than a varied drama). The name is a modification of the unscientific notion of schizophrenia as a multiple personality disorder to reflect the four destinct personalities of Jimmy, the opera's protagonist.