Book 4 charts the rise of Dr. Dre and Def Jam records, and introduces new branches on the "tree": Will Smith, Salt-N-Pepa, Rakim, and Biz Markie. This volume is also jam-packed with films Hollywood released in an attempt to cash in on the phenomenon, like Breakin, Breakin 2 Electric Boogaloo, Beat Street, Krush Groove and more.

• Item Weight : 1.15 pounds
• Paperback : 112 pages
• Dimensions : 9.1 x 0.7 x 13 inches