We're down to the Quarterfinals as Iron Maiden duke it out against fellow Brits and godfathers of heavy metal, Black Sabbath. While both bands have had legendary careers, this is all about the present, because this March Metal Madness tournament is about determining the Best Metal Song of the 21st Century!

Iron Maiden's rebirth came when Bruce Dickinson and Adrian Smith rejoined the band in 1999 and released Brave New World in 2000. The single "The Wicker Man" has held up strong in this tournament, taking out Dream Theater's "On the Backs of Angels" in Round 1 and, in Round 2, Tool's "Schism." Tool's fanbase is insatiable, but they proved to be no match for Maiden, who edged them out with almost 53 percent of the votes.

Black Sabbath may be saying farewell on tour and fans can give them a proper send-off by helping "God Is Dead?" receive the honor of being called the Best Metal Song of the 21st Century. The song beat out Opeth's "The Grand Conjuration" in Round 1 and then Rob Zombie's "Feel So Numb," capturing over 60 percent of the votes in Round 2.

So which song will move on to the Semifinals of March Metal Madness 2016? Listen to both tracks and vote for either Iron Maiden's "The Wicker Man" or Black Sabbath's "God Is Dead?" as the Best Metal Song of the 21st Century in the poll below!

(This poll will end on Tuesday, March 22, at 9AM ET. Fans are able to vote once per hour, so keep coming back to make sure your favorite song wins!)

Iron Maiden, "The Wicker Man"

Black Sabbath, "God Is Dead?"