Mark Deutrom is a guitarist, composer, songwriter, and producer.

Mark Deutrom studied composition at California Institute of the Arts in Valencia, CA . There he attended seminars with such composers as John Cage, Lou Harrison, Morton Feldman, Aaron Copland, and Morton Subotnick.

In 1986 Deutrom co founded Alchemy Records in San Francisco, CA. During his time at the label he produced a record for his own band, Clown Alley, as well as records for Sacrilege, Melvins, RKL, and Neurosis.

In 1993 Deutrom was invited to play bass in the Melvins. He was in the band from 1993-1998, and played on and contributed material to the albums "Prick", "Stoner Witch", "Stag", "Honky", " and additional releases. During his time with the band they toured with Tool, Nirvana, Nine Inch Nails, Kiss, and Rush among others.

In 2006 he was invited to collaborate with SunnO))) on various live dates in the USA and Europe.

Deutrom has released various solo projects and continues to produce projects for others.

The band Bellringer is the live vehicle for his music and currently features RL Hulsman on drums, Aaron Lack on drums, and Monique Ortiz on bass and vocals.

Bellringer released the album Jettison through Rock is Hell records August 2016.