Metallica are a metal band that were formed in 1981 and has become one of the most popular bands of all-time. Metallica lends three songs to the game in the form of a track pack. The songs are Ride the Lightning, Blackened, and of course, ...And Justice for All. Also, their biggest hit, Enter Sandman, is included with the game disc. Also, with the release of Rock Band 2, Battery, was a Disc Song.