context: Metallica is an American metal music band founded in Los Angeles, California by singer and guitarist James Hetfield and drummer Lars Ulrich in 1981. Known for its fast-paced and heavy music, Metallica is one of the most important 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: singer and guitarist James Hetfield and drummer Lars Ulrich