Heavy Metal legends and one of the greatest live bands on the planet, Iron Maiden, have just released a trailer for their upcoming live DVD / documentary 'En Vivo!' The official trailer for 'En Vivo!' perfectly previews the insanity that is the Iron Maiden live experience.

Filmed on April 10, 2011, in Santiago, Chile, Iron Maiden played in front of 50,000 raging metalheads for the DVD. South American fans are legendary for their energy and undying appreciation when touring bands stop by, which is the reason Maiden chose the Santiago concert to showcased in 'En Vivo!'

"For the Final Frontier Tour it was really important to me that we filmed in South America as we're always so overwhelmed by the fans' reaction when we go to that part of the world and I wanted to reflect that in the filming," raves Maiden bassist Steve Harris. "For reasons known to our fans, it took a long time before we got to play our first show in Chile, and once we did get to play a show, the response was so phenomenal we just had to keep coming back and it's got better and better each time!"

Along with the entire live show, the 88-minute documentary 'Behind the Beast' will be featured in the 'En Vivo!' release. Shot in more of a "home movie" style, 'Behind the Beast' will give an insider's look into the everyday experience of what it is to be Iron Maiden, plus the story of how Maiden and their crew pulled off one of the most ambitious and extraordinary world tours in music history.

'En Vivo!' will be released in Blu-Ray, DVD and CD form on March 26 (March 27 in North America). For a full track list, click here.

Watch the Official Trailer for 'En Vivo!'