Rock band Tool blends progressive and alternative rock to formulate their sound

Formed in 1990 in Los Angeles, rock band Tool have held the same members since its inception—except for Justin Chancellor, who replaced former bassist Paul D'Amour in 1995—and has been going strong ever since. The band launched their first album, Undertow, in 1993 and reached the height of their success in 1996 with their second album, Enima. Tool are an enigmatic band, utilizing complex music sequences and arrangements consisting of various combinations of psychedelic rock, progressive rock and art rock.

With two of the band members originally wanting to be in the film industry, future member Danny Corey was drumming in a few bands while Keenan was remodeling pet stores. Jones and Keenan met in 1989, and then started recruiting friends to join the band. After performing locally for two years, they signed a record deal with Zoo Entertainment, releasing their first EP, Opiate. Tool's music is notable for conveying stances on public and personal issues, very much used as an outlet for Keenan, and the other band members. Singing about these issues caused the band to become controversial among the secular sect, and they continued to defy all odds with an increase in sales and tour performances.

During their time together, Keenan also joined the side project, A Perfect Circle, featuring other fellow musicians. Shortly after, Tool's third studio album was released and focused on even more of art house sound amongst the band. In 2006, their fourth studio album, 10,000 Days, was released and peaked at No. 1 on the Billboard 200 for several weeks, raking in sales higher than Pearl Jam's self-titled album. 10,000 Days won Best Recording Package at the 49th Grammy Awards. Speculation about an upcoming album sometime in 2014 has occurred, but there has been no set date. Several band members, including Keenan, stated that they had enough material for a soon-to-be-released album.

Tool's live performances feature frequent light shows with varied stage setting, including elevated platforms and other video display. The band's influences are mostly King Crimson, with their critics alluding to Pink Floyd and The Sex Pistols. Among the band's nine music videos, they have only appeared in two, as they would rather the audience focus on the context of the music and not the people who create it. The band has received three Grammy Awards and have been nominated for four.