Let's examine the title of the story and its significance. Look over the story again and note the descriptions of Yakov's fiddle, of music and music-making. Using these as your guide, tell what you think the fiddle (its music also) represents, consciously and subconsciously, to Yakov, Marya, and Rothschild. And how does it link them to each other?
It's a short story, and a "little study," but still this calls for some deep thinking on your part.