Metallica is an iconic American heavy metal band out of California. Formed in 1981 by vocalist/guitarist James Hetfield and drummer Lars Ulrich, the band also includes current members Kirk Hammett (guitar) and Robert Trujillo (bass). The band has released 10 studio albums, four live albums, five extended plays, 26 music videos and 37 singles. Metallica has also won eight Grammy Awards and six of their albums have debuted at number one on the Billboard 200. They rank as one of the most commercially successful bands of all time having sold more over 110 million records worldwide.