155 Essential Drumbeats in Popular Styles. Develop your drumming versatility as you master these grooves for all occasions. This book and CD package contains 155 drumbeats in styles such as classic rock, modern rock, hip-hop, and rap, as well as Latin, country, jazz, and many more popular styles. Each beat on the two accompanying CDs has been professionally recorded by a real drummer. ©2007, Book & 2 CDs, 40 pages.