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Arts & Entertainment

The Mamas & the Papas

MusicEntertainmentThe Mamas & the Papas (music group)Mick JaggerJohn PhillipsCass ElliotDenny Doherty
Why they broke up: After it came out that singer Michelle Phillips was cheating on band songwriter John Phillips with other "Papa," Denny Doherty, things pretty much fell apart. However, it took two break ups, John Phillips insulting Cass Elliot in front of Mick Jagger and an album failure to... Les Lee/Express/Getty Images