Lupe Fiasco is the newest Sound Off winner! The rapper became the newest artist to prevail after he defeated J. Cole in yesterday's battle of the songs. Now, Fiasco and his 'Lasers' track 'I Don't Wanna Care Right Now' will take on newcomer Big Sean and his club banger 'Dance (A$$).'

On 'I Don't Wanna Care Right Now,' Fiasco delivers impressive mile-a-minute rhymes over the infectious combo of bumping bass and whirring synthesizer. Fiasco recruited MDMA for the track, and the results are a catchy cross over tune that appeals to both hip-hop and electronica fans.

Meanwhile, Big Sean's 'Dance (A$$)' layers hand claps, drums and heavy bass to create a head-bobbing beat. Sean also works in a sample of MC Hammer's breakdown in 'U Can't Touch This' -- except he puts a bada---, contemporary spin on it that makes you wanna get your swag on instead of busting out the crab walk in true Hammer-time fashion.

Which song do you like better? Cast your vote for either 'I Don't Wanna Care Right Now' or 'Dance (A$$)' below.

Listen to Lupe Fiasco, 'I Don't Wanna Care Right Now' Feat. MDMA

Listen to Big Sean, 'Dance (A$$)'

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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!