Kelly Clarkson: "Mr. Know It All"

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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