Singer, songwriter, and guitarist for the alternative metal band Godsmack. He is #47 on the Top 100 Heavy Metal Vocalists list by Hit Parader.
He was given his first musical instrument, a drum set, at age three. He started teaching himself how to play music by ear when he was eleven years old.
He and Godsmack released a self-titled four-time Platinum-selling debut album in 1998.
He has a daughter with Jennifer Brooke named Skylar Erna, and a son with Sarah Davis named Jett Erna.
He was bandmates with drummer Tommy Stewart before he left Godsmack.