Listen to Accordion Sonata No. 2: I. Allegro ingenuo online. Accordion Sonata No. 2: I. Allegro ingenuo is an English language song and is sung by Paul Chamberlain. Accordion Sonata No. 2: I. Allegro ingenuo, from the album Accordion Sensations, was released in the year 2016. The duration of the song is 6:38. Download English songs online from JioSaavn.