The Metal Masters Clinic 2 — featuring Slayer's Kerry King, Anthrax's Frank Bello and Charlie Benante, Megadeth's David Ellefson, and drum legend Mike Portnoy—is taking place today at the Best Buy Theater in New York City. You can watch that and a concert by Anthrax—featuring some mind-blowing surprise guests — right here. The clinic is being presented by Samson, Hartke, Zoom, and Best Buy Music Gear.

In case you can't wait til TH1RT3EEN drops on November 1, you can now stream the album's first single, "Public Enemy No. 1," on the band's official website as well as hear it below via YouTube.

We've been teasing you for the past couple of weeks with trailers for the November 2011 issue of Guitar World, which features the members of the Big Four. Now, you can check out the cover -- in all its glory -- below.

What magazine would be just crazy enough to fly all the way to Milan, Italy, just to get all of the members of the Big Four together for a once-in-a-lifetime photo shoot and historic roundtable discussion?