A step-by-step tutorial on the study of drumset grooves. The four basic rhythms and beats discussed are: Cha-Cha, Samba, Hip-Hop, and Slow Rock. Contains information on how to use the systems, notation for the various patterns and more. The companion CD is divided into three parts: basic study, combination grooves at a faster tempo and a backing track with "click" for practice. The beats are organized into groups of 15 variations per rhythm study for a total of 60 grooves arranged in sequence for the beginner/intermediate drum student. ©2006, Chart & CD, 4 pages.