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
Dream a Little Dream of Me indications that the Mamas & the Papas were set to disband, a perception strengthened by the failure of the lead single "Safe in My Garden". Having an opportunity to promote the group's best-known member as a soloist, Dunhill Records gave a June 1968 single release to the "Dream a Little Dream of Me" track with the credit reading - to John Phillips' displeasure - "Mama Cass with the Mamas & the Papas"; in its UK release the artist credit simply read "Mama Cass". Promoted in the US press and on billboards with a photograph of a discreetly but obviously nude