Frédéric Chopin is best known for his passionate piano works, which include various forms such as nocturnes and etudes. His unique style, characterized by emotional expressiveness and intricate melodies, sets his compositions apart in classical music. Therefore, the correct answer is 'piano works.' ;
Frédéric Chopin is best known for his passionate 'piano works' which include famous compositions such as nocturnes and études. His music reflects deep emotional expression and innovative harmony, setting him apart from other composers of his time. Thus, the correct answer is 'piano works.'
;