This book/cassette includes several examples of the various musical styles or "grooves" of such groups as The Temptations, James Brown, and other top acts from the 50"s and 60"s. The stylistic examples focus on the styles played by background players from the two eras. The cassette contains full rhythm section examples of the exercises from the book. If you want to become the bass player or the drummer in the group, this is made available to you by either turning off either the left or right channel. An outstanding, practical and historical volume.