Converge is an American metalcore band from Salem, Massachusetts. Formed in 1990, the group i comprised of vocalist Jacob Bannon, guitarist Kurt Ballou, bassist Nate Newton and drummer Ben Koller. Their style blends hardcore punk with heavy metal, and they are often considered pioneers of both metalcore and its subgenre , mathcore. According to AllMusic, Converge are "regarded as one of the most original and innovative bands to emerge from the punk underground".

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Agoraphobic Nosebleed (abbreviated as ANb) is a grindcore band formed in 1994 in Springfield, Massachusetts, United States. Its line-up has changed often over the years, with guitarist and drum programmer Scott Hull being the only continuous member. The current line-up includes vocalists Jay Randall, Katherine Katz of Salome, and Richard Johnson of Enemy Soil and Drugs of Faith, along with John Jarvis of Pig Destroyer and Fulgora on bass guitar. Agoraphobic Nosebleed is one of the most well-known drum-machine grindcore bands, and has influenced many drum-machine grindcore bands.