“The downpicking approach was inspired by competition between Dave and I. Like, ‘Here’s a riff… Wait, you can’t play that. Hahaha!’” How James Hetfield wrangled Megadeth, Slayer and Anthrax for metal’s biggest reunion

Dave Mustaine of Megadeth (L) and James Hetfield of Metallica perform during night four of the band's 30th Anniversary at The Fillmore on December 10, 2011 in San Francisco, California.

The following feature first appeared in the November 2011 issue of Guitar World.

When Guitar World travelled to Milan, Italy, on July 6, to pull together the Big 4 cover shoot with Metallica, Slayer, Megadeth and Anthrax, we narrowly managed to corral everyone together for the cover photo.