15 years ago today (6/16/10), 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. The big four would go on to play numerous more shows over Europe, but with only two in the U.S., including Indio, CA on 4/23/11 and the tour finale at Yankee Stadium on 9/14/11. Megadeth, Anthrax, and Slayer had previously all played together on portions of the 1990 Clash of the Titans tour, but it took another 20 years to get James, Lars, and Kirk to join up. Watch a short lead-up documentary and then see Metallica perform “The Four Horsemen” in Warsaw…
