Question: Torben Ulrich is a Danish writer, musician, filmmaker, painter, director, performer and former amateur then professional tennis player, and the father of Metallica drummer Lars Ulrich, a Danish musician, songwriter, actor, and record producer, he is best known as the drummer and co-founder of which American heavy metal band ?

Related documents: [0]  [DOC] Lars Ulrich {'1': ", '2': ", '3': 'R', '4': "} ( ; ] ; born December 26, 1963) is a Danish musician, songwriter, actor, and record producer. He is best known as the drummer and co-founder of the American heavy metal band Metallica. The son of tennis player Torben Ulrich and grandson of tennis player Einer Ulrich, he also played tennis in his youth and moved to Los Angeles at age 16 to train professionally. However, rather than playing tennis, Ulrich began playing the drums. After publishing an advertisement in "The Recycler", Ulrich met vocalist/guitarist James Hetfield and formed Metallica. [END] 
[1]  [DOC] Torben Ulrich (born October 4, 1928) is a Danish writer, musician, filmmaker, painter, director, performer and former amateur then professional tennis player. He is the father of Metallica drummer Lars Ulrich. [END]  
Answer: Metallica
Metallica