Even though Katy Perry's remix of 'The One That Got Away' has become yet another hit for the songstress, it seems she is no match for Selena Gomez. Although it was a close race, Justin Bieber's GF won yesterday's Sound Off with her single 'Hit the Lights,' with more 56% of the fan votes. Today, Gomez will take on David Guetta and his new 'Nothing but the Beat' single 'Titanium.'

While 'Hit the Lights' provides more effervescent dance-pop, with it's lighthearted carpe diem message and whirring synth, David Guetta gets our pulses pounding and fists pumping with the climactic beats and powerful message in 'Titanium.' Both Gomez's song and Guetta's track (which features vocals from Sia) have building beats that get you up on your feet and ready to hit the dancefloor at your nearest club.

Vote for either Selena Gomez and the Scene's 'Hit the Lights' or David Guetta and Sia's 'Titanium' below. The poll will close tomorrow, but Sound Off will be taking a break until Jan. 3, so you can expect a new match then!

Listen to Selena Gomez and the Scene, 'Hit the Lights'

Listen to David Guetta, 'Titanium' Feat. Sia

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Rules of ‘Sound Off’:
There’s only one rule for our ‘Sound Off’ series: If a song remains the reigning champ for five straight days, it is retired to PopCrush’s ‘Sound Off’ Hall of Fame. With tons of great tracks coming out everyday day, we have to give other artists a chance to win!