In the drumming world Claus Hessler is famous not only as an authority on the Moeller technique, but also as an author of drumming education standards through his international publications Open-Handed Playing Vol. 1 and Vol. 2, Daily Drumset Workout, as well as his double DVD Drumming Kairos. In his latest release, Camp Duty Update, Claus focuses on the world of rudiments, including their historical background, the European roots of the art of drumming...