Both Book One and Book Two are contained within this book: Book One is a progressive set of exercises that thoroughly covers Simple and Compound Meters. Starting with basic rhythms in 4/4 time, the book immediately trains the student to play and count rhythms in 2/4, 3/4, and 5/4. The latter half does the same for compound meters such as 6/8, 9/8, 12/8, and 15/8. Book Two is a progressive set of exercises that thoroughly covers Complex Meters. Picking up where Book One left off, Book Two trains the musician to be able to read and play in Complex Meters such as 7/8, 9/8, 11/8, 7/16, 9/16, and 11/16.