On first listen, Trout Mask Replica sounds like a wild, incomprehensible rampage through the blues. Don Van Vliet (a.k.a. Captain Beefheart) growls, rants and recites poetry over chaotic guitar licks. But every note was precisely planned in advance – to construct the songs, the Magic Band rehearsed 12 hours a day for months on end in a house with the windows blacked out. (Producer and longtime friend Frank Zappa was then able to record most of the album in less than five hours.) The avant-garde howl of tracks such as "Ella Guru" and "My Human Gets Me Blues" have inspired modern primitives from Tom Waits to PJ Harvey.