Unfotrunately I have not made an english version of this short story yet, so here's my fast translation for english speakers.

The story takes place in the Music Museum, Saint-Petersburg.

A guide tells about the collection and what the museum is keeping. Among everything there's the piano which used to belong to Shostakovich. After that the main character begins to imagine how great soviet composer used to play it and actually falls out of reality. Lost in thought she creates a poem about it (which I deny to translate, It's too difficult for me). So the guide suddently "wakes her up" by asking if she's listening or not.