One of the most popular performances M&Ps ever did. They're singing their classical "California Dreamin' " on Hullabaloo TV show in 1966. Bathtubes is a very artful idea! 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 breakthrough. After gaining little attention in Los Angeles upon its release, Michelle Phillips remembers that it took a radio station in Boston to break the song nationwide. By early 1966, the song peaked at # 4 and it stayed on the charts for 17 weeks. McGuire later claimed that you can hear his vocals in the background on the record.