"Battery" is the opening track of Metallica's 1986 album Master of Puppets. As with the opening track from Ride the Lightning (titled "Fight Fire With Fire"), Battery begins with a slow, clean guitar part. In this case, three acoustic guitars are layered harmonically before the drums and bass come in with distorted guitars playing a more melodic version of the acoustic part. This lasts until 1:06, when the guitars cut into a very fast minimalist thrash metal riff that is the basis for the rest of the song, the song also features a heavy bass line by Cliff Burton and a wild and difficult drum beat by Lars Ulrich. In live concerts, the beginning is not played by the band but instead the actual recording is used (recently dropped 1/2 step in key, since the band tunes 1/2 step down).