Mark studied electronic music composition with Ivan Tcherepnin, and conga drumming with Arthur Hull. His best known composition is the arpeggiated chord boot sound for the Mac II.
Paul Buser and Dylan Phan previously played extensively with Mark in the project. As a trio, their first album of improvised works was released under a different name: PTH Improv.
Josh Bailey and his musical, MIDI controlled Tesla coil synthesizer sometimes join the project, and can be heard on the Metal Biped album.