Pink Floyd's 9th studio album, "Wish You Were Here", was released on September 12, 1975. It was another Floyd concept album dealing with themes of absence, the "evil" music industry and their former bandmate Syd Barrett's mental decline. In fact, during the recording of the album, Syd actually showed up at the studio one day. He had changed so much that none of the members of the band even recognized him at first. Read the whole story behind the album here. . . .