Roots of Knocked Loose

Meshuggah is a Swedish extreme metal band formed in Umeå in 1987. Since 2004, the band's lineup consists of founding members Jens Kidman and Fredrik Thordendal, alongside rhythm guitarist Mårten Hagström, drummer Tomas Haake and bassist Dick Lövgren. Since its formation, the band has released nine studio albums, six EPs and eight music videos. Their latest studio album, Immutable, was released in April 2022 via Atomic Fire Records.

Gojira is a French heavy metal band from Ondres. Founded as Godzilla in 1996, the band's lineup – brothers Joe and Mario Duplantier (drums), Christian Andreu (guitar), and Jean-Michel Labadie (bass) – has been the same since the band changed its name to Gojira in 2001. Gojira has been known for its progressive and technical death metal styles and lyrics that often feature themes of spirituality, philosophy, and environmentalism. The band has gone "from the utmost obscurity during the first half of their career to widespread global recognition in the second".

Korn is an American nu metal band from Bakersfield, California, originally formed in 1993 by James "Munky" Shaffer, Reginald "Fieldy" Arvizu and David Silveria, who were members of the band L.A.P.D. Their current lineup features Shaffer (guitar), Brian "Head" Welch (guitar), Jonathan Davis (vocals), and Ray Luzier (drums), the last of whom replaced Silveria in 2007. The band is notable for pioneering and popularizing the nu metal genre.

Omen is an American heavy metal band formed in Los Angeles in 1983 by lead guitarist Kenny Powell.

Slayer is an American thrash metal band from Huntington Park, California, formed in 1981 by guitarists Kerry King and Jeff Hanneman, drummer Dave Lombardo and vocalist/bassist Tom Araya. Slayer's fast and aggressive musical style made them one of the "big four" bands of thrash metal, alongside Metallica, Megadeth, and Anthrax. Slayer's current lineup comprises King, Araya, drummer Paul Bostaph, and guitarist Gary Holt, who initially joined as a touring musician in 2011 before joining the band permanently after Hanneman's death in 2013; the drummer Jon Dette is a former member of the band.

Slipknot is an American heavy metal band formed in Des Moines, Iowa, in 1995 by percussionist Shawn Crahan, vocalist Anders Colsefni and bassist Paul Gray. After several lineup changes in its early years, the band settled on nine members from 1999 until Gray's death in 2010: Crahan, Gray, Joey Jordison, Craig Jones, Mick Thomson, Corey Taylor, Sid Wilson, Chris Fehn, and Jim Root. Slipknot is well known for its attention-grabbing image, aggressive style of music, and energetic and chaotic live shows.