The Mamas and the Papas took a more circuitous route to fame and fortune.

BBC: News | Entertainment | Rock's twisted roots exposed

Bobby Womack calls himself the "last soul man, " and his 1968 version of The Mamas and the Papas' "California Dreamin'" demonstrates that it's no exaggeration.

NPR: Bobby Womack: A Soul Icon Dreams Of L.A.

John Sebastian and Zal Yanovsky of The Lovin' Spoonful, and Cass Elliott and Denny Doherty of The Mamas and the Papas all started off in the group.

BBC: News | Entertainment | Rock's twisted roots exposed

Eventually, she and her father went to rehab together and she later toured with him in a band called the New Mamas and the Papas, according to People.com.

CNN: Mackenzie Phillips: I had sex with musician dad John Phillips

The 1967 event was organized by Lou Adler and the late John Phillips of the Mamas and the Papas and it was caught on film by documentary filmmaker D.

NPR: The Monterey Pop Festival, 40 Years Later

The Monterey International Pop Festival, which preceded Woodstock by two years, brought together a diverse group of big-name acts including the Mamas and the Papas and Jefferson Airplane as well as some then-unknown performers, notably Janis Joplin and Jimi Hendrix.

NPR: The Monterey Pop Festival, 40 Years Later

The singer was a close friend of Mamas and Papas star John Phillips, who wrote and produced the San Francisco track.

BBC: Scott McKenzie, singer of flower power pop, dies aged 73