For students with a basic knowledge of rhythm, this easy to understand book offers well-structured exercises on mastering increasingly complicated rhythmic patterns while improving accuracy. In Part 1, the accompanying audio files allows students to practice each exercise in different speeds as well as exercises with accelerando and ritardando. Parts 2 through 4 are arranged for ensemble settings of two to four parts. The book is well suited for classrooms, private lessons, small and large ensembles, and self-study. The book can be used for any instrument or voice. The open structure of the book allows both instructors and students to explore a variety of ways of practicing rhythm.