It's the most wonderful time of the year — Best of 2015 lists! Every December metalheads everywhere engage in tireless debates over the musical merits of the year. Defending their favorites, lists fly out everywhere laying accolades on the bands who have contributed the best music over the last 12 months. Being no exception to this phenomenon, we've assembled some lists of our own!

This list will count down the 20 Best Metal Songs of 2015! These songs were ranked based on a combination of songwriting, impact, ambition and more. We have songs from some of metal's most enduring acts as well as cuts from the underground and modern mainstays. It wasn't easy, but we did it. Time to celebrate the 20 Best Metal Songs of 2015!