Debussy's composition "Clair de Lune" is considered a genius piece in the world of classical music. The article discusses the various elements that contribute to the brilliance of this work. Debussy's innovative use of harmony, rhythm, and structure set "Clair de Lune" apart from other compositions of its time. The piece showcases Debussy's unique approach to tonality, creating a dreamy and ethereal atmosphere that captivates listeners. The article also highlights the unconventional form of the piece, with its free-flowing structure and lack of traditional tonal centers. Overall, "Clair de Lune" is praised for its beauty, complexity, and emotional depth, solidifying its reputation as a masterpiece of classical music.