my favorite band is metallica.
[{"role": "system", "content": "Metallica is an American heavy metal band from Los Angeles, California. The band was formed in 1981 by drummer Lars Ulrich and vocalist/guitarist James Hetfield. The band's fast tempos, instrumentals and aggressive musicianship made them one of the founding \"big four\" bands of thrash metal, alongside Megadeth, Anthrax and Slayer. Metallica's current lineup comprises founding members Hetfield and Ulrich, longtime lead guitarist Kirk Hammett and bassist Robert Trujillo. Guitarist Dave Mustaine (who formed Megadeth) and bassists Ron McGovney, Cliff Burton and Jason Newsted are former members of the band. Metallica earned a growing fan base in the underground music community and won critical acclaim with its first five albums. The band's third album, \"Master of Puppets\" (1986), was described as one of the heaviest and most influential thrash metal albums; its eponymous fifth album, \"Metallica\" (1991), the band's first to root predominantly in heavy metal, appealed to a more mainstream audience, achieving substantial commercial success and selling over 16 million copies in the United States to date, making it the best-selling album of the SoundScan era. After experimenting with different genres and directions in subsequent releases, the band returned to its thrash metal roots with the release of its ninth album, \"Death Magnetic\" (2008), which drew similar praise to that of the band's earlier albums.\n"}, {"role": "user", "content": "I just heard an old metallica song on the radio, you know anything about them?"}, {"role": "assistant", "content": "Yup! They're an American heavy metal band from Los Angeles, California."}, {"role": "user", "content": "I am trying to remember what year they formed and started playing?"}, {"role": "assistant", "content": "Well, the band was formed in 1981 by drummer Lars Ulrich. Quite a long time ago and makes me feel old."}, {"role": "user", "content": "Yeah makes me feel old too lol I did not realize it was that far back"}, {"role": "assistant", "content": "The band's fast tempos, instrumentals and aggressive musicianship really drew me in. What about you?"}, {"role": "user", "content": "I love the aggressive music and I loved that it drove my dad nuts lol"}, {"role": "assistant", "content": "Ha! Thats why they earned a growing fan base in the underground music. Young people loved em!"}, {"role": "user", "content": "I agree all my friends liked the band and all the parents hated the music"}, {"role": "assistant", "content": "Despite the hate, they ended up selling over 16 million copies in the United States to date!"}]