The opening of the percussion quartet Circuiting The Stroke (2008-09) has an almost martial quality, but it is music created for an army that has gone completely haywire. This is music that a troop would march to at great peril since before too long, any sense of pulse is completely eroded. Christensen’s clear infatuation with percussion instruments, undoubtedly from his years of experience as a drummer, is as much because of their specific timbres as their ability to clearly articulate rhythms.