Roots of Coalesce

Converge is an American metalcore band formed by vocalist and artist Jacob Bannon and guitarist and producer Kurt Ballou in Salem, Massachusetts, in 1990. While recording their landmark fourth album Jane Doe in 2001, the group became a four-piece with the departure of guitarist Aaron Dalbec and the addition of bassist Nate Newton and drummer Ben Koller. This lineup has remained intact since. The members have also been involved in various side-projects and collaborations, including the bands Supermachiner (Bannon), Old Man Gloom (Newton), and Mutoid Man (Koller). With their extremely aggressive and boundary-pushing sound, rooted in hardcore and heavy metal, they are pioneers of metalcore and its subgenre mathcore.

The Dillinger Escape Plan is an American metalcore band. The band was formed in 1997 in Morris Plains, New Jersey by guitarist Ben Weinman, bassist Adam Doll, vocalist Dimitri Minakakis, and drummer Chris Pennie. The band's use of dissonance, odd time signatures, polyrhythms and unconventional drum patterns became a staple of their sound, although later albums incorporated more melody, and influences from a range of genres. The band's lineup shifted numerous times throughout its existence; by the time the group dissolved, Weinman was the only remaining founding member. The final lineup also included longtime members Liam Wilson on bass, Greg Puciato as lead vocalist, and Billy Rymer on drums, alongside then-newcomer Kevin Antreassian on rhythm guitar.

Pantera is an American heavy metal band formed in Arlington, Texas, in 1981 by the Abbott brothers, and currently composed of vocalist Phil Anselmo, bassist Rex Brown, and touring musicians Zakk Wylde and Charlie Benante. The group's best-known lineup consisted of the Abbott brothers along with Brown and Anselmo, who joined in 1982 and 1986, respectively. The band is credited for developing and popularizing the subgenre of groove metal in the 1990s. Regarded as one of the most successful and influential bands in heavy metal history, Pantera has sold around 20 million records worldwide and has received four Grammy nominations.

Helmet is an American alternative metal band from New York City formed in 1989 by vocalist and lead guitarist Page Hamilton. Helmet has had numerous lineup changes with Hamilton as the only constant member. Since 2010, the band has consisted of Hamilton, drummer Kyle Stevenson, guitarist Dan Beeman and bassist Dave Case.