Demi Lovato Stuns On American Idol 2016 with 'Confident' and 'Stone Cold' (VIDEO)

Demi Lovato gave a vocal masterclass on American Idol 2016.

WOW! This was very impressive.

She sang her hit "Confident" with the Idol girls and "Stone Cold."

"Stone Cold" was unbelievable!
Demi is going on tour this summer with Nick Jonas.

https://twitter.com/AmericanIdol/status/705565859759026176

Press play to watch the video below.