Listen to The Piano Sonata No. 14 in C-Sharp Minor, Op. 27: I. Adagio Sostenuto online. The Piano Sonata No. 14 in C-Sharp Minor, Op. 27: I. Adagio Sostenuto is an English language song and is sung by Bruno-Leonardo Gelber. The Piano Sonata No. 14 in C-Sharp Minor, Op. 27: I. Adagio Sostenuto, from the album The Most Relaxing Classical Music for Travelers in the Universe, was released in the year 2009. The duration of the song is 6:34. Download English songs online from JioSaavn.