Kevin Spacey and Jimmy Fallon Sing ‘Talk Dirty,’ Barbershop Style (Video)

The “Ragtime Gals” come out for some a cappella fun on Friday’s “Tonight Show”

Last Updated: August 4, 2014 @ 10:06 AM

You can’t say Frank Underwood doesn’t have a lighter side.

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Kevin Spacey added a fifth voice to Jimmy Fallon‘s “Ragtime Gals,” the barbershop quartet that frequents NBC’s “Tonight Show.” On the repertoire for Friday night was Jason Derulo’s hit song, “Talk Dirty.”

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Watch Fallon, Spacey, and the “Gals” tra-la-la their way into some pretty good harmony — and some pretty great hilarity — above.