He really is the nicest man.

President Obama delivered an impromptu rendition of ‘Purple Rain’ for a tiny trick-or-treater dressed up as Prince at the White House’s Halloween party on Monday (October 31). The president was handing out candy to a line of kids at the event, which he was hosting alongside Michelle Obama for local kids and the children of military families. Barack and Michelle also got up on stage to do the ‘Thriller’ dance at one point during the party.

This past year, Obama’s love of music has taken on the form of a shareable summer playlist, a festival and a tribute to Prince. Last week he named Kendrick Lamar and fellow “young guy” Chance The Rapper as two of his favourite rappers. “Those guys are doing just amazing work,” he said on Sway in the Morning, calling them “wonderful young men.

“Chance I’ve known for years, because his dad was my state director when I was a senator in Illinois, so I first met Chance when he was eight years old, and so we’ve been family for a while. And Kendrick, you know, he’s blowing it up. He’s doing great.”

Read next: Here’s what your favourite artists wore for Halloween 2016