Études (Chopin)
…they remain popular and are often performed in both concert and private stages. Some are so popular they have been given nicknames; among these are Op. 10, No. 3, sometimes called Tristesse ("Sadness") or "Farewell" (L'Adieu), the "Revolutionary" (Op. 10, No. 12), "Black Keys" (Op. 10, No. 5), and "Winter Wind…