Biography:Cass Elliot (born Ellen Naomi Cohen; September 19, 1941 - July 29, 1974), also known as Mama Cass, was an American singer, member of The Mamas & the Papas and actress. After the group broke up, she released five solo albums. In 1998, Elliot, John Phillips, Denny Doherty, and Michelle Phillips were inducted into the Rock and Roll Hall of Fame for their work as The Mamas & the Papas.