THE SCREENING ROOM: Porgy and Bess Performs "It Ain't Necessarily So" on "Late Night" (Video)
Tony Award nominee David Alan Grier and the cast of the Broadway revival of The Gershwins' Porgy and Bess visited "Late Night With Jimmy Fallon" Feb. 21—the second night of Broadway week on "Late Night"—to perform "It Ain't Necessarily So."