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 .
Other popular albums released by The Who.