The Mamas & the Papas (credited as The Mama's and the Papa's on the debut album cover) were a vocal group of the 1960s. The group recorded and performed from 1965 to 1968 with a short reunion in 1971, releasing five albums and ten hit singles. They have sold nearly 40 million records worldwide. "California Dreamin'" is a song by The Mamas & the Papas, first released in 1965. The song is #89 in Rolling Stone's list of The 500 Greatest Songs of All Time. According to John Phillips in a Bravo documentary, and Michelle Phillips in an NPR piece, the song was written in 1963 while they were living in New York. He dreamed about the song and woke her up to help him write. At the time, the Phillipses were members of the folk group The New Journeymen which evolved into The Mamas & the Papas.
They earned their first record contract after being introduced to Lou Adler, the head of Dunhill Records, by the singer Barry McGuire. In thanks to Adler, they sang the backing vocals to "California Dreamin'" on McGuire's album This Precious Time. The Mamas and the Papas then recorded their own version. The single was released in late 1965 but it was not an immediate.