Filling in for Green Day as Voodoo headliners, Metallica teased a cover of 'American Idiot,' dedicated a song to ailing frontman Billie Joe Armstrong.

Metallica paid tribute to Green Day over the weekend, as the Bay Area metal band filled in for the Bay Area pop-punks at the Voodoo Music + Arts Experience in New Orleans.

Saturday was chilly by New Orleans standards and plenty windy enough to get even the most scantily-clad costumed festivalgoers to at least put on some tights at this year's Voodoo Experience festival.. As Hurricane Sandy continued in its projected trajectory towards the East Coast, many fans joked about the ironies of evacuating to New Orleans for such a storm. I'm sure the out-of-towners were glad they did. Besides, a set from Metallica should keep everyone warm.

Hammett's forthcoming book Too Much Horror Business examines his lifelong passion thoroughly and with as much fervor as he speaks on the subject. The legendary guitarist's understanding of horror is inspiring and thought-provoking as he offers a guided tour of his impressive collection of genre artifacts. He tells the story in captivating fashion, matching the rhythm with which he plays guitar. He remains one of history's best guitarists, and one reason is his diverse knowledge of all art forms - including horror.