Twelve Thirty (Young Girls Are Coming to the Canyon) Twelve Thirty (Young Girls Are Coming to the Canyon) "Twelve Thirty" a.k.a. "Twelve-Thirty (Young Girls Are Coming to the Canyon)", the song's main refrain, is a song by The Mamas & the Papas. After the release of the group's third album -- "Deliver"—and their appearance as the closing act of the Monterey International Pop Festival, the group was scheduled to appear in England. The visit was catastrophic for both the group and Cass Elliot (see The Mamas & the Papas main article for further details), and resulted in Cass leaving the group temporarily. The group had completed four tracks for
The Mamas & the Papas depending on the availability of the other group members: "It was rare we were all together. Most tracks were dubbed, one vocal at a time." The Mamas and the Papas' last album of new material, "People Like Us", was released in November 1971. The only single, "Step Out" (January 1972), reached number eighty-one in the US. The album peaked at number eighty-four on the "Billboard" 200, making it the only Mamas and Papas LP not to reach the top twenty in the US. Neither single nor album charted in the UK. Contractual obligations fulfilled, the band's split was now final.