For her latest earworm, Clarkson narrows her octave range – no American Idol glory notes here – and sasses a controlling man with double-entendres ("Baby, I ain't goin' down") that up her R&B appeal. The only problem? Bruno Mars wants his "Just the Way You Are" hook back.

Listen to "Mr. Know It All":

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“My President”

Young Jeezy teams up with Nas on this track, in which he compare his own success with the idea of an African-American winning the Democratic Party's nomination in the 2008 presidential election. "When I pulled up in my car, that s--- was unbelievable to people in my neighborhood because they were like, 'We grew up with him. How the hell did he accomplish this?'" he told Rolling Stone. "I feel like it was the same way with Obama. I grew up all this time, but I've never seen a black man this close to running this country."