September 19, 1931 –
Paramount released the Marx Brother’s third film, Monkey Business on this date.
At different times in the movie Chico and Harpo can be heard whistling the song I’m Daffy Over You and Harpo eventually plays it on the harp at Chico’s urging. It is also performed by Chico on the piano in their previous film Animal Crackers, the tune of which Groucho had found irritable when Chico couldn’t remember its ending.
The Haus of Dcaligari 