How does Prelude to the Afternoon of a Faun demonstrate musical Impressionism?

Prelude to the Afternoon of a Faun is considered a quintessential example of musical Impressionism, a style characterized by a focus on atmosphere, timbre, and the avoidance of traditional, goal-oriented structures.1

The work demonstrates Impressionist ideals through several key techniques:

• Emphasis on Timbre: Debussy utilizes a wide palette of orchestral colors to create light and shadow, prioritizing the "shimmering interplay" of instrumental sounds over traditional harmonic development.23
• Fluid Structure: The music avoids abrupt shifts, favoring a seamless flow where themes blend into one another. This lack of directed motion disrupts the forward-driving rhetoric common in Romanticism.12
• Atmospheric Evocation: Rather than following a rigid musical form, the piece functions as a musical evocation of a dreamlike state. It begins with a sinuous, graceful flute melody and incorporates gently swelling phrases from strings, harp, and horns to build a sensuous, hazy mood.1

By prioritizing these subtle, coloristic effects, Debussy successfully translated the aesthetic goals of contemporary Impressionist painters into the medium of sound.24