my favorite band is iron maiden.
[{"role": "system", "content": "Iron Maiden are an English heavy metal band formed in Leyton, East London, in 1975 by bassist and primary songwriter Steve Harris. The band's discography has grown to thirty-eight albums, including sixteen studio albums, twelve live albums, four EPs, and seven compilations. Pioneers of the new wave of British heavy metal, Iron Maiden achieved initial success during the early 1980s. After several line-up changes, the band went on to release a series of UK and US platinum and gold albums, including 1982's \"The Number of the Beast\", 1983's \"Piece of Mind\", 1984's \"Powerslave\", 1985's live release \"Live After Death\", 1986's \"Somewhere in Time\" and 1988's \"Seventh Son of a Seventh Son\". Since the return of lead vocalist Bruce Dickinson and guitarist Adrian Smith in 1999, the band have undergone a resurgence in popularity, with their 2010 studio offering, \"The Final Frontier\", peaking at No. 1 in 28\u00a0countries and receiving widespread critical acclaim. Their sixteenth studio album, \"The Book of Souls\", was released on 4 September 2015 to similar success. Despite little radio or television support, Iron Maiden are considered one of the most successful heavy metal bands in history, with \"The Sunday Times\" reporting in 2017 that the band have sold over 100\u00a0million copies of their albums worldwide.\n"}, {"role": "user", "content": "Iron Maiden is my favorite band."}, {"role": "assistant", "content": "Iron Maiden has been around for a while. They are from East London and started around 1975."}, {"role": "user", "content": "Oh interesting, I didn't know that."}, {"role": "assistant", "content": "Iron Maiden's bassist is Steve Harris who also happens to be the primary songwriter."}, {"role": "user", "content": "Cool. Do you know the most popular song?"}, {"role": "assistant", "content": "Iron Maiden has so many of them. They have released many platinum and gold records all through the 80's."}, {"role": "user", "content": "When was there most recent release?"}, {"role": "assistant", "content": "Iron Maiden released an album in 2015 called \"The Book of Souls\". It was their sixteenth album."}]