American Pop is a 1981 American adult animated jukebox musical drama film starring Ron Thompson and produced and directed by Ralph Bakshi. It was the fourth animated feature film to be presented in Dolby sound. The film tells the story of four generations of an immigrant family of musicians whose careers parallel the history of American popular music in the 20th century.The majority of the film's animation was completed through rotoscoping, a process in which live actors are filmed and the subsequent footage is used for animators to draw over. However, the film also uses a variety of other media including water-colors, live-action shots, and archival footage.