Killswitch Engage is a metalcore band from Westfield, Massachusetts, USA. Their sound mixes crushing riffs, double bass drum patterns, furious screaming-growling vocals and a dash of melodic elements. Their music is heavily influenced by the hardcore music scene. A key feature of the band's sound is the use of complex palm muting, single-note and power chord riffs featuring dual-guitar harmonies, often punctuated with pinch harmonic squeals.