9Metal Rhythm Guitar examines the guitar playing at the roots of metal in the mid-1960s, such as Led Zeppelin and Deep Purple, and the New Wave of British Heavy Metal bands of the late '70s and early '80s like Judas Priest, Saxon and Iron Maiden. The thrash metal of bands like Metallica and Slayer are covered, along with bands like Death, Pantera and Meshuggah who progressed Heavy Metal and expanded the technical possibilities