You know Demi Lovato can sing. I know Demi Lovato can sing. She proved it at the MTV EMA's over the weekend when she killed "Sorry Not Sorry," and then she did it again on Monday (Nov. 13) in BBC Radio 1's "Live Lounge," where she not only performed that hit single, but also her classic track "Skyscraper" and an absolutely killer cover of Sam Smith's "Too Good at Goodbyes." 

The smoky take on Smith's song got the British crooner's attention, prompting a tweet from Sam in which he had high praise for Demi's take. "SAAAAAAANG IT," he wrote. Maybe a superstar summit is in the cards? After all, Demi said, "he's such a sweetheart... I'd dying to collaborate with him."

The love fest continued with Demi returning the compliment.

Here's her jazzy take on "Sorry Not Sorry."

And "Skyscraper."

Photo: Getty Images