(CNN) -- In 1967, the Mamas & the Papas had a hit with a song that detailed, with bittersweet harmonies, the checkered history of the band. The song, written by the group's John Phillips and his wife, Michelle, was called "Creeque Alley."





Michelle Phillips, Denny Doherty and John Phillips, here in 1998, were members of the Mamas & the Papas.





If the song were to be updated today, it might have to be retitled "Creep Alley."





With the claims by John's daughter, Mackenzie, that she had an incestuous relationship with her father, the story of Phillips and his group -- in music, models of California dreams and California dreamin' -- takes on a darker hue.





The story was already tangled, a motley love- and drug-soaked tale of excess set to the group's distinctive four-part harmonies.





Phillips left his first wife, Mackenzie's mother, Susan Adams, for 18-year-old Michelle, whom he'd met in a San Francisco club while touring in the early '60s, according to the band's biography on Allmusic.com.





The band's lead male singer, Denny Doherty, later had an affair with Michelle; she was forced out of the group for a time. The fourth member, Cass Elliot, had an unrequited crush on Doherty, the biography noted.





After the Mamas & the Papas' success with such singles as "California Dreamin' " and the No. 1 hit "Monday, Monday," the Phillipses bought a Bel Air mansion from which they ruled over the Los Angeles music scene.





In his 1986 memoir, "Papa John," John Phillips, who died in 2001, remembered hosting parties for the Beatles when they visited town.





John Phillips, the band's primary songwriter, was at least six years older than the others and did not shy from the task of addressing the group's pain and confusion in song. In such songs as "Got a Feelin'," "I Saw Her Again Last Night" and "Trip, Stumble and Fall," he cast a cold eye on the band's romantic entanglements, even as his melancholy and sometimes cutting lyrics were often belied by those sunny harmonies and Lou Adler's slick production.





"One doesn't try to hold Cass and Denny and Michelle together," he said in a 1995 interview. "It's a useless task to start with. You just sort of stay out of the way and let things roll as they can."





In 1968, the group split up. There was a 1971 reunion that produced the contractually obligated album "People Like Us," but the experience was "horrible," John Phillips recalled in the liner notes to the group's anthology, "The History of the Mamas and the Papas."





The group members had mixed success after the breakup. Elliot, who died of a heart attack in 1974 (and not by choking on a sandwich, as urban legend has it), pursued a solo career; she had a handful of hits. Doherty and John Phillips also tried their hands at solo careers; the latter's 1970 "John, the Wolf King of L.A.," produced a minor hit and is now considered a classic but sold relatively poorly upon release.





More common were the stories of trouble. Michelle and John Phillips divorced in 1970; late that year, Michelle was married to Dennis Hopper for eight days.





John Phillips, who married Genevieve Waite in 1972, became increasingly immersed in drugs, says his Allmusic biography, to the point where he couldn't finish an album commissioned by the Rolling Stones' Mick Jagger and Keith Richards. In 1981, he was convicted of drug trafficking.





By that point, daughter Mackenzie says, she was also a full-blown drug addict.





"I grew up in a place where there were no rules ... which did not serve me well, and everybody, I think, knew that," she said on a reunion special for her '70s sitcom, "One Day at a Time."
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