Last night on "The Tonight Show Starring Jimmy Fallon," the Ragtime Gals were back for another killer musical led by Fallon. The barbershop quartet even added a new member, actor Joseph Gordon-Levitt.

The star of the upcoming film "The Walk" joined Fallon and the three other singers for a beautifully harmonized version of Rihanna's "B---h Better Have My Money." The group did a fantastic job of toning down the more racy lyrics to the song and replaced them with white bread lyrics instead. The actor took some liberties with Rihanna's lyrics and switched her "foreign cars" out for an "electric" one.

Gordon-Levitt even gave a sneak peak to his Twitter followers! "Last time I was on ‪@jimmyfallon's show, we lip synced. Tonight, we sing! (So much fun)," the actor wrote on the social media site.

The "500 Days of Summer" actor was not the first "Tonight Show" guest to join the Ragtime Girls for a special performance. Justin Timberlake, Steve Carell and Sting all sung with the group before.

Check out the hilarious clip below!