Listen to Sonata: I. Allegro, molto deciso online. Sonata: I. Allegro, molto deciso is an English language song and is sung by Eleonore Pameijer and Frans van Ruth. Sonata: I. Allegro, molto deciso, from the album Lowlands, was released in the year 2007. The duration of the song is 4:20. Download English songs online from JioSaavn.