Director Ralph Bakshi's ambitious, animated time capsule charts a century of American music via four generations of one family. The movie underscores the abiding human bond with music despite rapidly changing styles, while also touching on drug addiction, war's horrors and shifting social mores. George Gershwin, Scott Joplin, Sam Cooke, Jimi Hendrix and scores of other music giants provide the endless stream of topnotch tunes.