October 1996 saw the release of Ænima which eventually beat Tool's debut in sales, and was certified triple platinum by the RIAA in 2003. He was replaced by Justin Chancellor and recording resumed. Shortly after entering the studio to record their second album in September 1995, the band experienced its only lineup change to date, with bassist D'Amour leaving amicably to pursue other projects. The album was certified double platinum by the Recording Industry Association of America (RIAA) in 2001. After touring to positive reviews, they released their first full-length album, Undertow, in April 1993. Tool signed to Zoo Entertainment just three months into their career, and released their first studio EP, Opiate, in March 1992.
Although demos are typically intended only for record labels, the band was so pleased with theirs that they sold copies to their fans. They initially released a demo EP in 1991 called 72826. Tool was founded in 1990 by vocalist Maynard James Keenan and guitarist Adam Jones, who then recruited drummer Danny Carey and bassist Paul D'Amour. The discography of American rock band Tool consists of five studio albums, one box set, two extended plays, four video albums, fifteen singles and eight music videos.
