Bobby Roberts (film producer) the album Slow Flux by Steppenwolf. IMDB.com credits Roberts as serving as producer or executive producer of nine TV or film productions. Bobby Roberts (film producer) Robert M. "Bobby" Roberts (May 9, 1929 – October 10, 2004) was a musician, producer, record executive and Hollywood film producer. In 1964, Roberts co-founded Dunhill Productions, which became Dunhill Records the following year. Roberts also managed performers such as The Mamas and The Papas, Richard Pryor, Mort Sahl, Mama Cass Elliott, Paul Anka, Ann-Margret, Johnny Rivers and many others. Roberts formed Mums Records with Hal Landers and Don Altfeld in 1972. The label,
Casey Donovan (singer) 2011 movie version, Donovan was not cast. 2011 saw Donovan reprise her role of Cynthia Macrae in another tour of the hit show "The Sapphires". The tour ran during February in ACT and NSW, and was followed by two weeks in the UK in March. In August/September 2011, Donovan created the role of Mama Cass in the world premiere of new musical "Flowerchildren – The Mamas & the Papas Story" written by Peter Fitzpatrick and produced by Australian company Magnormos. She was joined by Matt Hetherington as John Phillips, Laura Fitzpatrick as Michelle Phillips, and Dan Humphris as Denny Doherty.