Listen to Flute Sonata in E-Flat Major, BWV 1031: I. Allegro moderato online. Flute Sonata in E-Flat Major, BWV 1031: I. Allegro moderato is an English language song and is sung by Classical Music Songs. Flute Sonata in E-Flat Major, BWV 1031: I. Allegro moderato, from the album Harmony & Concentration – Music for Study, Classical Songs for Better Memory, Deep Focus, Mozart, Bach, Betthoven, was released in the year 2017. The duration of the song is 3:16. Download English songs online from JioSaavn.