The Vocal Gymnastics CD and Booklet Set consists of the majority of voice exercises that were taught by the late Maestro David Kyle of Seattle, WA. There are 5 CD's that contain the same exercises, each recorded in a different key to accommodate various voice ranges. The 30 page booklet includes the exercises in musical format, printed in the key of C, as a reference. Also included are tips on how to practice the exercises, information on how to properly care for the voice and much more. Vocalists will find this a very convenient and thorough vocal training tool. The booklet includes a training log to track daily practice.