"Undertow" is the debut studio album by the American rock band Tool, released on April 6, 1993, under Zoo Entertainment. This album features a total of 10 tracks, showcasing Tool's unique blend of progressive rock and alternative metal elements. Notable for its complex time signatures, intricate guitar work, and thought-provoking lyrics, "Undertow" solidified Tool's reputation in the early 1990s rock scene. The album opens with the powerful track "Intolerance," setting the tone for a collection that explores themes of personal struggle and societal issues. Other key tracks include "Prison Sex" and "Sober," which became staples of the band's live performances. "Undertow" received critical acclaim for its musicianship and lyrical depth, contributing to Tool's growing fan base. The album's production, led by Sylvia Massy, plays a significant role in the overall sound, combining raw energy with polished instrumentation. "Undertow" is often regarded as an influential release in the rock genre, marking a pivotal moment in Tool's evolution as artists.