Billy Howerdel (born May 18, 1970) is an American musician, best known as a founding member, guitarist, backing vocalist, songwriter, and producer for the band A Perfect Circle, as well as for his former solo project, Ashes Divide. Howerdel has recorded six studio albums across his career: four with A Perfect Circle, one under the moniker Ashes Divide, and one under his own name.
http://www.ashesdivide.com/