The 20 Minute Warm-Up Routine by Michael Davis is a dynamic, comprehensive set of 15 exercises and 15 play-along tracks that will both warm you up and work you out. This routine will absolutely energize your practice routine. It gives you the opportunity to play along with and emulate one of the world's finest brass players. With Chris Komer on french horn the 20 Minute Warm-Up gives you examples to strive for in a fresh and innovative way.