Listen to Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": I. Allegro assai online. Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": I. Allegro assai is an English language song and is sung by Gerard Willems. Piano Sonata No. 23 in F Minor, Op. 57 "Appassionata": I. Allegro assai, from the album The Classic 100: Piano – The Top Ten & Selected Highlights, was released in the year 2014. The duration of the song is 10:20. Download English songs online from JioSaavn.