0
Maynard James Keenan
Maynard James Keenan
American musician, singer and songwriter
1
Adam Jones
Adam Jones
musician
2
Green Jellÿ
Green Jellÿ
American Punk/Comedy Band
3
A Perfect Circle
A Perfect Circle
American alternative rock band
4
Puscifer
Puscifer
American rock band
5
David Bottrill
David Bottrill
Canadian record producer
6
Anneke van Giersbergen
Anneke van Giersbergen
Dutch musician
7
Corrosion of Conformity
Corrosion of Conformity
American heavy metal band formed in 1982
8
Killswitch Engage
Killswitch Engage
American metalcore band
9
Brad Wilk
Brad Wilk
American musician
10
Chris Pitman
Chris Pitman
American musician
11
Tenacious D
Tenacious D
American pop duo
12
10 Years
10 Years
American alternative metal band
13
King Crimson
King Crimson
British progressive rock band
14
Chevelle
Chevelle
American rock band
15
Primus
Primus
rock band from the United States
16
Mastodon
Mastodon
American heavy metal band
17
Metallica
Metallica
American heavy metal band
18
Crimson Moonlight
Crimson Moonlight
band
19
Ashes Divide
Ashes Divide
American alternative rock project
20
Joe Barresi
Joe Barresi
American record producer
21
Lustmord
Lustmord
British musician
22
Tom Morello
Tom Morello
American guitarist and singer-songwriter
23
Stolen Babies
Stolen Babies
band
24
Adrian Belew
Adrian Belew
American rock musician
25
Korn
Korn
American nu metal band
26
Slayer
Slayer
American thrash metal band
27
Led Zeppelin
Led Zeppelin
English rock band
28
Lamb of God
Lamb of God
metal band from United States
29
Norah Jones
Norah Jones
American singer, songwriter and pianist
30
Slipknot
Slipknot
American metal band
31
Trivium
Trivium
American heavy metal band
32
Volbeat
Volbeat
Danish metal band
33
As I Lay Dying
As I Lay Dying
American metalcore band
34
Underoath
Underoath
American band
35
Between the Buried and Me
Between the Buried and Me
American metal band from North Carolina.
36
Sylvia Massy
Sylvia Massy
American record producer
37
Buzz Osborne
Buzz Osborne
American singer, guitarist and producer
38
Crimson Glory
Crimson Glory
American band
39
Stone Sour
Stone Sour
American heavy metal band
40
Meshuggah
Meshuggah
Swedish extreme metal band
41
Hatebreed
Hatebreed
American metalcore band
42
Judas Priest
Judas Priest
British heavy metal band
43
August Burns Red
August Burns Red
American metalcore band
44
Megadeth
Megadeth
American heavy metal band
45
Sepultura
Sepultura
Brazilian Metal Band
46
W.A.S.P.
W.A.S.P.
American heavy metal band
47
Frank Ferrer
Frank Ferrer
American musician
Members, past and present

Tool is an American rock band from Los Angeles. Formed in 1990, the group's line-up includes drummer Danny Carey, guitarist Adam Jones, and vocalist Maynard James Keenan. Justin Chancellor has been the band's bassist since 1995, replacing their original bassist Paul D'Amour. Tool has won four Grammy Awards, performed worldwide tours, and produced albums topping the charts in several countries.

To date, the band has released five studio albums, one EP and one box set. They emerged with a heavy metal sound on their first studio album, Undertow (1993), and became a dominant act in the alternative metal movement with the release of their follow-up album Ænima in 1996. Their efforts to unify musical experimentation, visual arts, and a message of personal evolution continued with Lateralus (2001) and 10,000 Days (2006), gaining critical acclaim and international commercial success. Their fifth studio album, Fear Inoculum, was released on August 30, 2019, to widespread critical acclaim. Prior to its release, the band had sold over 13 million albums in the US alone.

Due to Tool's incorporation of visual arts and very long and complex releases, the band is generally described as a style-transcending act and part of progressive rock, psychedelic rock, and art rock. The relationship between the band and today's music industry is ambivalent, at times marked by censorship, and the band's insistence on privacy.