Quadrophenia is the sixth studio album by the English rock band The Who. Released on 19 October 1973, by Track, Polydor in the United Kingdom and Track and MCA in the United States, Quadrophenia is a double album, and the group's second rock opera. Its story involves social, musical, and psychological happenings from an English teenage perspective, set in London and Brighton in 1964 and 1965. The name is a variation on the popular usage of the medical diagnostic term schizophrenia as dissociative identity disorder to reflect the four distinct personalities of Jimmy, the opera's protagonist—each said to represent the personality of one member of The Who. Quadrophenia was originally released as a two-LP set with a butterfly jacket and a thick booklet containing lyrics, a text version of the story, and photographs illustrating the tale. MCA Records re-released it as a two-CD set in 1985 with the lyrics and text story line on a thin fold-up sheet but none of the photographs. The original Polydor CD issue included the complete booklet in miniature, as did the remastered MCA and Polydor CD reissues of 1996. Quadrophenia was originally released in the U.K. as Track 2657 013 on October 26, 1973. However, it appears that due to a vinyl shortage caused by the OPEC oil embargo, only a limited number of copies got to stores before production had to be halted. Most British Who fans failed to find a copy until after The Who's U.K. tour. In the U.K., Quadrophenia reached the #2 position