What is the significance of the tune coming from the piano winter dreams?

In "Winter Dreams," the tune from the piano symbolizes the protagonist Dexter Green's aspirations and the ephemeral nature of his dreams. It evokes a sense of nostalgia and longing, reflecting Dexter’s pursuit of love and success, particularly his infatuation with Judy Jones. The music underscores the theme of unattainable desires, highlighting how beauty and ambition can be both inspiring and ultimately elusive.