Concentrating on Co-Ordination - Book & CD. Is an essential part of the drummer's skill. A sound understanding of music theory, plus the ability to concentrate, are also important if the musician is to improve technique and avoid stagnation. Contains many,many hours of excellent tuition which help the player master both the technical and mental skills. This book includes exercises devised for all 4 limbs & if approached in a methodical manner they really work, Backed up by a 57 minute CD.