The Harmonizers have spoken! Fifth Harmony's 'Sledgehammer' beat out Jake Miller's 'Ghost,' moving them on to the next round of Pop Clash. This week, they're up against Shawn Mendes' 'Something Big.' Which song should win the Pop Clash?

Fifth Harmony are at the top of their game with 'Sledgehammer.' The upbeat love anthem perfectly captures the overwhelming feeling of falling for someone. Plus, it really, really makes us want to dance! Fifth Harmony's vocals sound incredible on this track-- and while it's a romantic track, it still radiates with their signature confidence.

We can't resist the upbeat rhythm that kicks off Shawn Mendes' 'Something Big.' The track is a surge of optimism. We can't help but think this song is a little bit prophetic for Shawn, who released it following the news that he'll be opening for Taylor Swift. We're sure this song will sound as incredible in a stadium as it does on our iPods.

Which song should win this week's Pop Clash? You can vote for Fifth Harmony or Shawn Mendes once an hour until the polls close at 3PM ET on Nov. 17.

Listen to Fifth Harmony's 'Sledgehammer'

Listen to Shawn Mendes' 'Something Big'