Watch 'Ignition (Remix)' Performed As A Barbershop Quartet On 'Fallon'

It may be literally a billion degrees below zero outside (not scientifically confirmed), but you can pretend it's summer for at least a few fleeting moments with this amazing rendition of the warm-weather classic, R. Kelly's "Ignition (Remix)." On Tuesday's "Tonight Show," the song was performed as a barbershop quartet by The Ragtime Gals, made up of Jimmy Fallon, Tom Shillue, A.D. Miles and Chris Tartaro, who had performed songs like "SexyBack" and "I Wanna Sex You Up" in barbershop style on "Late Night."

Check out the perfect harmonies below, and try to hang in there until the freakin' weekend.