In what year did The Who release the double album rock opera that preceded the Who's Next studio album?
Who's Next:  It developed from the aborted "Lifehouse" project, a multi-media rock opera written by the group's Pete Townshend as a follow-up to the band's 1969 album "Tommy". Tommy (album): Tommy is the fourth studio album by the English rock band The Who, a double album first released in May 1969. Tommy (album):  The album was mostly composed by guitarist Pete Townshend as a rock opera that tells the story about a deaf, dumb and blind boy, including his experiences with life and his relationship with his family.
1969