Listen to Piano Sonata No. 1 in C Major, K. 279: I. Allegro online. Piano Sonata No. 1 in C Major, K. 279: I. Allegro is an English language song and is sung by Exam Study Music Academy. Piano Sonata No. 1 in C Major, K. 279: I. Allegro, from the album Ready & Study – Classic Music for Learning, Study, Improve Concentration, Various Composers, was released in the year 2017. The duration of the song is 3:42. Download English songs online from JioSaavn.