He was the rhythm guitarist and bassist for the Christian metal band, Demon Hunter, which he co-founded with his brother, vocalist Ryan Clark.
[5] Clark formed the band with the Rob Dennler (vocals), Steve Saxby (bass) and Morley Boyer (drums).
Based on their design experience, Don and Ryan authored a chapter in the book New Masters of Photoshop, Volume 2 (ISBN 1590593154).
On August 12, 2009 in Seattle, Washington, at El Corazón, Demon Hunter announced that Don Clark had left the band to pursue his career in graphic design and to be with his family.
In an interview with Matt Johnson Clark stated that, he, Don & Ryan, and Nathan Burke formed a project called Deathbed Atheist.