From the movie: THE BIG STORE 1941
Some fun swing dance with Groucho and Harpo Marx joining in. I believe I see Patti Lacey and Ray Hirsch on the far left starting at about the :25 mark. Groucho then dances with I believe Patti Lacey beginning at about the :40 mark. Also featured are the excellent vocal group “Six Hits and a Miss” and briefly deadpanned Virginia O’Brien. Fun number.