Jesse Leach is an American musician best known as the lead vocalist for the metalcore band Killswitch Engage. He first joined the band in 1999 and contributed to their early success with albums like Alive or Just Breathing. After leaving the band in 2002, he pursued other musical projects but returned to Killswitch Engage in 2012. In addition to his work with Killswitch Engage, Jesse Leach has been involved in various side projects, including Times of Grace, which he formed with guitarist Adam Dutkiewicz. Leach is recognized for his powerful vocal style and passionate lyrics, making him a prominent figure in the heavy music scene.