Undertow Released April 6, 1993 Recorded October–December 1992 Studio Sound City Studios, Van Nuys, California Grandmaster Studios, Hollywood, California Genre Alternative metal[1]progressive metal[2] Length 69:13 Label Zoo Producer Sylvia MassyTool Tool chronology Opiate (1992) Undertow (1993) Ænima (1996) Singles from Undertow "Sober" Released: May 1993 "Prison Sex" Released: 1993 "Undertow" Released: 1993 Undertow is the debut studio album by American rock band Tool, released on April 6, 1993 by Zoo Entertainment. Produced by the band and Sylvia Massy, it was recorded from October to December 1992 at Sound City Studios in Van Nuys and Grandmaster Recorders in Hollywood. The album includes some tracks the band decided to not release on their debut EP Opiate.[3]