The lesson of this story (which is really more of a sketch than a story), is that art is actually an illusion. Everyone has a different opinion. Everyone is a critic. The author also has a lot of cynicism embedded in the story.
In this eNotes Educator's opinion, our own website says it best:
The illusion created is, as the music critic suggests, “the most artistic thing of all.” Art, by definition, is contrived; it is artifice.
In other words, it is the music critic that gives the most insight...
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