13. The Mamas and the Papas (1998)
The original Mamas and Papas broke up in 1968, coming back together super briefly three years later for a contractually obligated reunion album. Cass Elliott's death three years later made any sort of full reunion impossible, but in the 1980s John Phillips and Denny Doherty toured as the New Mamas and Papas. Mackenzie Phillips and Elaine "Spanky" McFarlane took on the female roles. They played a lot of state fairs and did a lot of drugs. Things got depraved. We'll spare you the gory details, but they are outlined in Mackenzie's book. Anyway, the only time that Michelle Phillips sang with her ex-bandmates was at the group's 1998 Hall of Fame induction. John clearly wasn't in good health and was forced to sit on a stool as they played "California Dreamin'." He died three years later and Doherty followed in 2007.