could you mention any other work done him?
He and Kaylan founded the Turtles, a popular band of the late 1960s.
Mark Volman
Volman and Howard Kaylan founded the Turtles, a popular band of the late 1960s. 
what is down and dirty duck? It is an adult animated comedy. who directed it? Charles Swenson and produced by? Jerry D. Good what is the film about? A strait-laced, low-level white-collar worker named Willard and an unnamed duck. how was it received by the public? It received mostly negative reviews, with many criticizing it for its crude humor. where is the director from? America and the producer? UNANSWERABLE by whom was the voiceover done in the film? Mark Volman and Howard Kaylan who was the former? He is an American rock and roll guitarist, vocalist, and songwriter.
wiki:18414274
Mark Volman [SEP] Music and film
Volman and Howard Kaylan founded the Turtles, a popular band of the late 1960s. In December 1968, "NME" magazine reported that Volman had insured his distinctive frizzy hair for US$100,000 against fire, theft or loss due to illness. As their band folded, Volman and Kaylan discovered that the terms of their contract forbade them to use not only the name 'The Turtles', but also their own names. Kaylan and Volman were recruited by Frank Zappa, joining the Mothers of Invention, and they also worked together as Flo & Eddie in music, in film (they provided music and voices for animated films like "Down and Dirty Duck"), and in radio broadcasting.