Who is the best live band? That's what we're trying to find out in this tournament and two of rock's most enduring acts are vying to advance into the semifinals.

On one side you have Pearl Jam, now into their third decade of pleasing crowds with their incredible live shows. They advanced to this point in the tournament by besting Red Hot Chili Peppers and Foo Fighters, two acts who are definitely crowd pleasers as well. Emerging from the "grunge" umbrella, the band now yields a more diverse catalog that allows them to playing epic and varied shows filled with hits, unique cover songs and deep album tracks. This frequently bootlegged band is one of the tightest rock outfits going with the ability to play just about anything and with charismatic frontman Eddie Vedder leading the way, they've become a must-see live act.

On the other side of this matchup, you'll find freshly minted Rock and Roll Hall of Famers Green Day. And much like Pearl Jam, they emerged in the '90s and their live show has also evolved over time. Green Day started as a trio powering through punk-infused favorites with ferocity. But these days, it's a more diverse catalog that Green Day have to work with and they're prone to pull out whatever feels good on any given night. With unpredictable singer Billie Joe Armstrong leading the way, the band has become a truly great live act. Having defeated Iggy and the Stooges and System of a Down en route to this Mosh Pit Region pairing, Green Day are ready to put their live show up against all comers, including Pearl Jam.

So who will advance to the Best Live Band Final Four? Do you prefer Pearl Jam or Green Day? You can vote once per hour through the deadline of Tuesday, July 28 at 10AM ET. So make your votes count in the poll below.

See All the Brackets in the Best Live Band Tournament:

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