Jonathan Groff Records a 'Frozen' Voice Memo as Kristoff For Jimmy Fallon's Kids: Watch

Jonathan Groff
Andrew Lipovsky/NBC

Jonathan Groff during an interview with host Jimmy Fallon on The Tonight Show Starring Jimmy Fallon on Aug. 13, 2019.

Jonathan Groff stopped by The Tonight Show Starring Jimmy Fallon on Tuesday (Aug. 13) -- and didn't come empty-handed. 

"It's hard when you meet a kid, to say, 'I'm Kristoff in Frozen.' They're like, 'You're not blonde, you're not a cartoon, I don't know what you're talking about,'" Groff, who portrays the rugged mountain man in the 2013 hit Disney film, explained. "But then I make these little voice memos on my phone."

Groff then offered to record a voice memo as his character, Kristoff, for host Jimmy Fallon's children, Winnie and Frances, as a gift.

After proposing the idea to Fallon -- who obviously loved it -- he explained that he already got the song cleared by Disney. Then, acting as both Kristoff and Sven, the Broadway star sang an excellent, a capella rendition of "Reindeers Are Better Than People." 

During the appearance, Groff also talked about the upcoming Michael Mayer-directed show Little Shop of Horrors, which is happening on Sept. 17 off-Broadway at the Westside Theater. 

Watch the full clip below.