By Deborah Frost
Updated May 13, 1994 at 04:00 AM EDT

Nirvana’s Kurt Cobain wasn’t the only rock genius who fell off the tightrope stretched between creativity and mental instability. Pink Floyd founder Syd Barrett descended into a private hell, which was quickly exploited as subject matter by his former bandmates. This three-CD solo set of his on-the-edge music, Crazy Diamond, recorded before Barrett’s professional aspirations collapsed irrevocably in the early ’70s, provides an even more touching, if slightly terrifying, musical portrait of a terribly fragile soul.