The "well-known Musical Comedy and Film Star" Binnie Barnes sings a comic song "I Guess I'll Have to Change My Plan".
At the piano Jack London "incidentally, the famous Olympic Sprinter".
Binnie wears a great white blouse with low neck and big puffy sleeves. The song is about how Binnie will have to change her plan now she has found out that the man she fancies has another woman.
Jack is great! He looks like he is really enjoying himself. A black pianist.
It is quite a short song - alas.