Heavy metal bassist who played with Pantera, Down, and Kill Devil Hill and who wrote the book Official Truth 101 Proof.
He was a member of his high school's jazz band.
He helped Pantera score four Platinum-selling albums between 1990 and 1994.
He married Melinda Brown, with whom he had a daughter who also plays bass.
He was bandmates with drummer Vinnie Paul in Pantera.