Metallica is an American heavy metal band. The band was formed in 1981 in Los Angeles by vocalist/guitarist James Hetfield and drummer Lars Ulrich. The band's fast tempos, instrumentals and aggressive musicianship made them one of the founding "big four" bands of thrash metal. Metallica has released ten studio albums, four live albums, a cover album, five extended plays, 37 singles and 39 music videos. The band has won nine Grammy Awards from 23 nominations, and its last six studio albums (beginning with Metallica) have consecutively debuted at number one on the Billboard 200.