June 23 is turning out to be a very good day for Ed Sheeran! Not only did he release his sophomore album 'X,' but he also locked in his first Pop Clash win for 'Sing'! Last round, the singer beat out Beyonce with 57% of the votes. This week, he's up against Charli XCX's 'Boom Clap.' Which song should win this week's Pop Clash?

Ed Sheeran's 'Sing' was the first taste of what fans could expect from 'X.' The beat-friendly song is infectious -- and even features some falsettos from Ed. The upbeat track is a more mature sound from Ed, but he still stays true to himself, which we love. Oh, and we love the rapid-fire rapping of the second verse.

Charli XCX's 'Boom Clap' kicks off with just that -- a bombastic chant. The '-infused track is perfectly poppy and captures the bubbly feeling of falling head-over-heels for someone. It's a perfect fit for the soundtrack of 'The Fault in Our Stars.' Every time we listen to 'Boom Clap,' we hear ourselves singing along with the ridiculously catchy chorus!

Which song should win this week's Pop Clash? You can vote for 'Sing' or 'Boom Clap' once an hour until the polls close on June 30 at 3PM ET.

Watch Ed Sheeran, 'Sing' Video

Watch Charli XCX, 'Boom Clap' Video

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