When Jessie J sings she's gonna do it like it "Ain't Been Done," you'd be hard-pressed to doubt her. I mean, how many other singers in the game today could honestly keep up with her in this acoustic live performance video? BE HONEST. You've got to learn to walk before you pull of those runs.

"Ain't Been Done" serves as the opening track on the "Burnin' Up" singer's third studio album, Sweet Talker, which is expected to drop this coming Tuesday, October 14.