Avenged Sevenfold's M. Shadows is featured above wearing an Iron Maiden shirt and now his band has the chance to take down one of their idols as "Nightmare" faces off against "Fear of the Dark" in the Semifinals of our Most Haunting Halloween Track tournament!

Avenged Sevenfold took care of business in the Quarterfinals with a victory over shock rock icon Alice Cooper and his song "Welcome to My Nightmare." A7X's song "Nightmare" also defeated another legendary Halloween song, Type O Negative's "Black No. 1" in Round 1. They face their most difficult matchup yet as they look to overtake Iron Maiden in this Semifinals.

Iron Maiden coasted to victory over Rob Zombie as "Fear of the Dark" proved to be too much for "Living Dead Girl." Much like their competition in this round, Maiden knocked out two of Halloween's favorites with victories over Zombie and Marilyn Manson. This round should be one fine matchup!

Avenged Sevenfold’s “Nightmare” or Iron Maiden's "Fear of the Dark?” Cast your vote for the Most Haunting Halloween Track in the poll below! 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!

Avenged Sevenfold, "Nightmare"

Iron Maiden, "Fear of the Dark"

See Every Matchup in the Most Haunting Halloween Track Tournament