The Who's Tommy

http://en.wikipedia.org/wiki/Rock_opera

Tommy is the first of The Who's two full-scale rock operas (the second being Quadrophenia), and the first musical work explicitly billed as a rock opera. In some older publications it is called Tommy (1914–1984). Released in 1969, the opera was composed by Who guitarist Pete Townshend, with two tracks contributed by Who bassist John Entwistle and one fictitiously attributed to Who drummer Keith Moon, though actually written by Townshend.1 An earlier song by blues artist Sonny Boy Williamson II was also incorporated into the opera.