Ginger keeps up and, at times, challenges Fred in a call-response kind of dance. There is a sense of equal footing and feeling each other out in this scene.
Overall, I liked what Wes Gehring, Ph.D. said in the lecture video about the difficulty of genre classification. This movie is a carefully crafted comedy with music and dance and that would be the expectation because of the principle players of the film. By this time Fred Astaire is a full-blown star and enjoyed for both his dancing, singing and acting. Ginger Rogers is appearing in many other vehicles that show her as a triple-threa