Listen to Piano Sonata No. 4 in G Major, Hob. XVI:G1: I. Allegro online. Piano Sonata No. 4 in G Major, Hob. XVI:G1: I. Allegro is an English language song and is sung by Studying Music. Piano Sonata No. 4 in G Major, Hob. XVI:G1: I. Allegro, from the album Classical Focus – Music for Learning, Deep Focus, Improve Mind, Effective Study, Haydn, was released in the year 2017. The duration of the song is 4:20. Download English songs online from JioSaavn.