We've entered the Semifinals with just four competitors left! The Quarterfinals saw some rock and metal icons leave the stage, but don't fear (or fear, it is Halloween, after all) because there's two great matchups in this round with some of the most legendary songs powering through the Most Haunting Halloween Track tournament.

The Trick Region has seen Ozzy Osbourne and Black Sabbath dominate so far and now they're going head to head in one of the best matchups we've had so far! It's "Bark at the Moon" against "Black Sabbath," which is sure to have the Ozzy diehards in a bit of a twist here.

The Treat Region has seen Avenged Sevenfold and Iron Maiden take on some of rock and metal's most legendary Halloween time acts with their haunting songs. The victories came over such icons Alice Cooper, Type O Negative, Rob Zombie, and Marilyn Manson. Now, one of these titans will fall too.

Which track is the Most Haunting Halloween Track? You decide! Voting for this round closes on Friday, Oct. 23, at 9 AM ET. Fans can vote once per hour, so keep coming back to make sure that your favorite Haunting Halloween Track wins! Click the red button to get started!