context: Metallica is an American metal music band formed by singer and guitarist James Hetfield and drummer Lars Ulrich in Los Angeles, California in 1981. Known for its fast-paced and heavy-duty music, Metallica is one of the most significant metal music bands ever, Alongside Slayer and Anthrax, he is also known as one of the "four big" bands in the thrash metal genre. In addition to James Hetfield and Lars Ulrich, who have been with the band since its inception, Metallica includes Kirk Hammett, a solo guitarist who played in the band since 1983, and Robert Trujillo, a bassist who joined the band in 2003. [1]
question: Who founded Metallica?
answers.text: James Hetfield and drummer Lars Ulrich