Lars Ulrich (; Danish: [ˈlɑːs ˈulˀʁek]; born 26 December 1963) is a Danish musician who is the drummer and co-founder of American heavy metal band Metallica. Along with James Hetfield, Ulrich has songwriting credits on almost all of the band's songs, and the two of them are the only remaining original members of the band.
The son and grandson respectively of tennis players Torben and Einer Ulrich, he played tennis in his youth and moved to Los Angeles at age 16 to train professionally. However, rather than playing tennis, Ulrich began playing drums. After publishing an advertisement in The Recycler, Ulrich met Hetfield and formed Metallica.
Source : Wikipedia
