Listen to Piano Sonata No. 4 in E-Flat Major, Op. 7: IV. Rondo. Poco Allegretto E Grazioso online. Piano Sonata No. 4 in E-Flat Major, Op. 7: IV. Rondo. Poco Allegretto E Grazioso is an English language song and is sung by Daniela Ruso. Piano Sonata No. 4 in E-Flat Major, Op. 7: IV. Rondo. Poco Allegretto E Grazioso, from the album 100 Essential Beethoven Classics, was released in the year 2015. The duration of the song is 6:53. Download English songs online from JioSaavn.