The Mamas & the Papas was a folk rock vocal group formed in Los Angeles, California, which recorded and performed from 1965 to 1968. The group was a defining force in the music scene of the counterculture of the 1960s. The group consisted of Americans John Phillips, Cass Elliot, and Michelle Phillips, and Canadian Denny Doherty. Its sound was based on vocal harmonies arranged by John Phillips, the songwriter, musician, and leader of the group, who adapted folk to the new beat style of the early 1960s.

The Mamas & the Papas released five studio albums and 17 singles over four years, six of which made the Billboard top 10, and has sold close to 40 million records worldwide. The band was inducted into the Rock and Roll Hall of Fame in 1998 for its contributions to the music industry. The band reunited briefly to record the album People Like Us in 1971 but had ceased touring and performing by that time. Some of its most popular singles include "California Dreamin'", "Monday, Monday", and "Dedicated to the One I Love".

Source: Wikipedia (https://en.wikipedia.org/wiki/The_Mamas_%26_the_Papas)