Listen to Keyboard Sonata No. 31 in A-Flat Major, Hob.XVI:46: I. Allegro moderato online. Keyboard Sonata No. 31 in A-Flat Major, Hob.XVI:46: I. Allegro moderato is an English language song and is sung by Tom Beghin. Keyboard Sonata No. 31 in A-Flat Major, Hob.XVI:46: I. Allegro moderato, from the album The Virtual Haydn: Complete Works for Solo Keyboard, was released in the year 2011. The duration of the song is 8:21. Download English songs online from JioSaavn.