Who is the most Chopin'S famous piece of music?

Frédéric Chopin's most famous piece is arguably his Nocturne in E-flat Major, Op. 9, No. 2. Known for its lyrical melody and expressive depth, this piece showcases Chopin's mastery of piano music and his ability to convey emotion. Other notable works include his Ballade No. 1 and the Prelude in D-flat Major, Op. 28, No. 15, also known as the "Raindrop Prelude." However, the Nocturne remains a quintessential representation of his style and is widely recognized and performed.