Metallica is an American heavy metal band formed in Los Angeles, California in 1981. The band released its debut album Kill 'Em All in 1983, which credited songwriting between frontman James Hetfield, drummer Lars Ulrich and guitarist Dave Mustaine, who had left before the album was recorded (bassist Cliff Burton was credited for the bass solo "(Anesthesia) – Pulling Teeth"). On the 1984 follow-up Ride the Lightning, Burton received more songwriting credits and Mustaine's replacement Kirk Hammett was also co-credited on four songs. Master of Puppets, released in 1986, was the last album to feature Burton, who died in a bus accident later that year.