Anthrax is an American heavy metal band from New York City, formed in 1981 by guitarist Scott Ian and bassist Dan Lilker. The group was considered one of the leaders of the thrash metal scene during the 1980s. Of the "Big Four" thrash metal bands (the others being Metallica, Megadeth and Slayer), Anthrax were the only band from the East Coast. As of 2014, the band has released ten studio albums, a number of singles and an EP with American hip hop group Public Enemy. According to Nielsen SoundScan, Anthrax sold 2.5 million records in the United States from 1991 to 2004, with worldwide sales of 10 million.