Metallica/Slayer/Megadeth/Anthrax : The Big 4 - Live from Sofia, Bulgaria (5 CD/2 DVD Set)

The Big 4 Live from Sofia, Bulgaria is a DVD/Blu-ray featuring live concert performances by Metallica, Slayer, Megadeth, and Anthrax, collectively known as "The Big 4" of thrash metal. The event took place on 22 June 2010 at the Sonisphere Festival at Vasil Levski National Stadium, Sofia, Bulgaria. Before its DVD release, it was shown at 450 movie theaters in the United States and over 350 movie theaters across Europe, Canada, and Latin America on June 22, 2010. There was a limited-edition guitar pick unveiled shortly after the contents and artwork were released.
Critical reviews of the album were mostly favorable. Sites such as Allmusic and About.com were positive, but Blogcritics gave the DVD a mixed review. The DVD peaked at number one on the United States, United Kingdom, Austrian, and Canadian charts, and also charted on three other charts. It went Gold in Germany, and provided Slayer with their first platinum certification.