Watch Demi Lovato Perform "Skyscraper" on 'America's Got Talent'

Demi Lovato is really making a strong comeback. The singer delivered a powerful performance last night on the America's Got Talent results show, moving the crowd.

Demi commanded the stage with her single "Skyscraper," on the hit NBC show.

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Her presence was strong and powerful and her vocals were on point for the most part, with her nerves creeping in only at a couple of moments.

Demi's new album Unbroken hits stores Sept. 20.

Catch her performance below. Were you impressed? Sound off in the comments.