Metallica is determining which of their songs is the favorite among their legion of fans with the #SomeKindOfBracket challenge.

Launched today, fans can vote on song match-ups via Metallica’s Facebook or Instagram stories.

Per the band’s social media accounts, the 64 songs that make up the bracket were selected and seeded “…based on Spotify plays multiplied by how many times a song’s been played live.”

To begin voting and to cast future votes, make sure you follow Metallica on Facebook and/or Instagram.

BAT-TERY GO! It's time for your fav Metallica songs to go head to head in #SomeKindOfBracket. Vote on daily match-ups in our Instagram stories and on Facebook until we crown the champ!

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Erica Banas is a rock/classic rock news blogger who's well-versed in etiquette and extraordinarily nice. #TransRightsAreHumanRights