Fans asked to darken side of moon as Pink Floyd LP turns 40

NEW YORK, Mar 21:  Pink Floyd’s seminal stoner album “Dark Side of the Moon” is turning 40 on Sunday, and the band’s website has developed an interactive feature whereby fans can help turn a specially designed moon on the site dark. Starting after midnight Sunday in England (8:01 p.M. EDT on Saturday), fans are invited to play back the classic album on PinkFloyd.Com, then tweet their memories, photos or other thoughts and comments using DarkSide40. (agencies)