Alternative CCM rockers Skillet formed in Memphis, Tennessee, around the nucleus of lead singer and bassist John Cooper, guitarist Ken Steorts, and drummer Trey McClurkin. Debuting in 1996 with a self-titled LP, the trio returned two years later with Hey You, I Love Your Soul. Invincible followed in early 2000, and the group contributed three tracks to the Ardent Worship: Skillet Live compilation that same year. Comatose appeared in fall 2006, followed by Awake in 2009, and Rise in 2013. A compilation album, Vital Signs, was released in 2014 to introduce the band to European audiences. Skillet's ninth album, Unleashed, their heaviest and most powerful to date, followed in 2016.