One of three founding members of Oakland, Ca. experimental hardcore band Neurosis. Has been writing and publishing music since 1985 with Neurosis, Tribes of Neurot, Blood and Time and his solo acoustic project. He has also appeared in other recordings, most notably Mastodon's Leviathan (2004), on the song Aqua Dementia.

Currently he's still writing, recording, and preforming with Neurosis and all of the related projects as well as being part owner of Neurosis' record label Neurot recordings.