Flight of the Behemoth is the second album by Sunn O))). The band collaborated with Japanese noise artist Merzbow, who mixed tracks 3 and 4, and used drum machine and vocals on the track "F.W.T.B.T.," an interpretation of Metallica's "For Whom the Bell Tolls". While the band did try to follow the original structure and riffing of the song, the intent was not to copy the original, but to rewrite the song for themselves.