"Eine Kleine Nachtmusik" is the last of Denevi's character-based pieces, and like some of the others has an element of confrontation between a certain porteño snobbery and the wider world. Two spinster sisters spend their nights listening to records of classical music in their apartment, which is in a building which is largely empty. One day the hear that a young musician has moved into an apartment in the floor below theirs. That night they hear him playing tangos in the apartment below.
The younger sister finds his tangos moving and becomes fascinated with him. She begins to think about running into him, seeing him as a potential escape for the lonely existence she is living with her sister. Though her sister acts horrified about the sort of music he plays, she also has an interest in meeting him.
In the end, things do not work out quite as either planned in a melancholy ending.