Charlie Puth was in the studio with Alicia Keys this weekend, and they recorded a duet to "Whip Appeal" by Babyface.
In the video he posted on Instagram, Alicia says, "You know Charlie knows Babyface? Bet y'all didn't know that. I didn't know that."
You can see that Charlie forgets some of the words, but he plays it off really well and their harmonizing is flawless... check it out below: