Trout Mask Replica is the third album by Captain Beefheart and his Magic Band, released in June 1969. Produced by Beefheart's friend and former schoolmate Frank Zappa, it was originally released as a double album on Zappa's Straight Records label. Combining elements of blues, avant-garde, free jazz and other genres of American music, the album is regarded as an important work of experimental music and a major influence on genres such as alternative rock, progressive rock, math rock and post-punk.