Listen to Piano Sonata No. 4 in E-Flat Major, Op. 7: III. Allegro online. Piano Sonata No. 4 in E-Flat Major, Op. 7: III. Allegro is an Unknown language song and is sung by The Stradivari Orchestra. Piano Sonata No. 4 in E-Flat Major, Op. 7: III. Allegro, from the album Ultimate Classical for Babies with Mozart and Beethoven: The Best Relaxation Music for Children, Easy Listening, was released in the year 2016. The duration of the song is 2:39. Download Unknown songs online from JioSaavn.