Metallica is an American heavy metal band formed in 1981, in Los Angeles, California. Their original lineup consisted of Lars Ulrich, guitarist and vocalist James Hetfield, Dave Mustaine on lead guitar and bassist Ron McGovney. These last two were shortly afterwards replaced by Kirk Hammett and Cliff Burton, respectively. On September 27, 1986, the band's tour bus lost control and flipped, which resulted in Burton being crushed under the bus and died. Jason Newsted replaced him less than two months later. Newsted left the band in 2001 and was replaced by Robert Trujillo in 2003.