Dev is on fire, winning our 'Sound Off' series for four days in a row now! Yesterday, the sassy California native's single 'Dance in the Dark' beat out Kelly Clarkson's new hit 'Mr. Know It All.' Today, Dev has a new challenger in the form of fellow dance-pop hitmaker Jason Derulo.

Can Dev's 'In the Dark' overtake Jason Derulo's latest upbeat single 'It Girl'? Cast your votes below for the song you like best. Remember, if Dev wins this round, we'll retire 'In the Dark' and start fresh with a new batch of songs tomorrow. Good luck to both contenders!

Listen to Dev, 'In the Dark'

Listen to Jason Derulo, 'It Girl'

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!