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Genghis Tron is an American four-piece cybergrind band formed in Poughkeepsie, New York, United States, and latterly based in Brooklyn, New York and San Francisco, California. The band signed to Relapse Records after releasing two recordings on Crucial Blast. The group went on an indefinite hiatus in 2010, but returned in 2020 and soon after announced a new album, Dream Weapon, in March 2021.

Exotic Animal Petting Zoo was an experimental mathcore quartet based in Crown Point, Indiana. They released their debut album, I Have Made My Bed In Darkness, on Mediaskare records. Their second album, Tree Of Tongues, was released August 5, 2012. They have toured with acts such as Fear Before and Dead Letter Circus.

Exotic Animal Petting Zoo formed in 2004. Shortly after their conception, they released a 5-song demo. In 2005, the band recruited Scott Certa, as their permanent bassist, which led to the recording of their first EP. Soon after the release of their EP, they got signed by Mediaskare Records. Their debut album, I Have Made My Bed In Darkness, was released in August 2008. Their second album, Tree of Tongues, was released in 2012. Later that year, guitarist Jeffrey Zampillo left the band.

The Dillinger Escape Plan was 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 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 last surviving lineup also included longtime members Liam Wilson on bass, Greg Puciato as lead vocalist, and Billy Rymer on the drum kit, alongside then-newcomer Kevin Antreassian as rhythm guitarist.

Ion Dissonance is a Canadian mathcore band from Montreal, Quebec. They are known for their technical style, which switched to a more groove based style with the release of their 2007 album Minus the Herd.

Down I Go are an experimental hardcore band from London.

Their music combines complex song structure and rhythmic patterns with both melodic and screaming vocals, as well as frequently marrying these features with orchestral instrumentation including brass and string sections.

All their major releases have been written around specific individual themes, in release order: dinosaurs, environmental and man-made disasters, fictional robots, historical tyrants, Greek mythology and Icelandic folklore.

Notable fans include musicians Tom Vek, Tim Elsenburg of Sweet Billy Pilgrim, who said their music exemplified "...the imagination gone mad, in a really, really good way", and Jamie Lenman, who described them as "...the best band ever to come out of this tiny island"

Psyopus (sometimes written as PsyOpus) was an American mathcore band from Rochester, New York.

Formed in 2002, the band is noted for the unorthodox and extremely technical guitar techniques of Christopher Arp, often referred to as "Arpmandude", because he mainly uses one technique, tapping. To get endorsement deals from various guitar and amp companies, Arp had to send a live video of himself playing to prove that he could play as fast as he does. Arp considers Psyopus a technically proficient band: "I understand people not understanding us so by default the music comes across as noise but, the music makes sense to us all too much and every 16th note was scrutinized." Regarding learning to play guitar, Arp says: "I learned to play guitar in my bedroom. I got my first guitar in eighth grade. I bought Metallica tablature books, Megadeth books, guitar magazines, didn’t do homework, and just played guitar all night."

Rolo Tomassi are an English band from Sheffield. Their name is taken from a dialogue in the film L.A. Confidential. The band is known for their strong DIY ethic and chaotic style and performances. They are currently signed to MNRK Heavy.

Lye By Mistake were an American experimental metal band from St. Louis, Missouri, United States, that formed in 2004. They released their most recent album, Fea Jur, on October 13, 2009. They blend many genres into their music, including progressive rock, jazz fusion, and mathcore. After seven years as a musical project, the members went their separate ways in 2011. By late 2012, the band's dissolution was confirmed by both former vocalist Tony Saputo and former drummer Drew Button, although no official breakup announcement was ever made.

The Tony Danza Tapdance Extravaganza was an American mathcore band from Murfreesboro, Tennessee. The band was founded in Monroe, Louisiana by members Layne Meylain, Mason Crooks, Brad Thompson, and Mike Butler. They relocated to Murfreesboro, TN to look for a frontman and found Jessie Freeland.

Five Star Prison Cell was an Australian four-piece band from Melbourne, Australia, whose music was generally labelled as tech metal or math rock. They were known for their use of unusual time signatures, dissonant guitar riffs, and a vocal approach that explored many different avenues and styles.