Frank Vincent Zappa was an American composer, songwriter, electric guitarist, conductor, actor, satirist, filmmaker and activist. In a career spanning more than 30 years, Zappa composed rock, pop, jazz, jazz fusion, orchestral and musique concrète works; he additionally produced nearly all the 60-plus albums he released with his band the Mothers of Invention and as a solo artist. His work, which predominantly features electric guitar work, is characterized by nonconformity, improvisation sound experimentation, musical virtuosity and satire of American culture. Zappa also directed feature-length films and music videos, and designed album covers. He is considered one of the most innovative and stylistically diverse musicians of his generation.