On June 16, 2010, at the Sonisphere Festival at Bemowo Airport in Warsaw, Poland, the "big four" of American thrash metal—Metallica, Slayer, Megadeth, and Anthrax—performed together for the first time. Anthrax was the first band to go on and played 10 songs.

Unfortunately the movie Anthrax - The Big Four - Live from Sofia, Bulgaria is not yet available on Netflix. Follow us on Facebook to see when Anthrax - The Big Four - Live from Sofia, Bulgaria becomes available on Netflix!