Listen to Violin Sonata in G Major, BWV 1021: I. Adagio (Flute Harp Version) online. Violin Sonata in G Major, BWV 1021: I. Adagio (Flute Harp Version) is an English language song and is sung by Classical Music Songs and Concentration Music Guys. Violin Sonata in G Major, BWV 1021: I. Adagio (Flute Harp Version), from the album Effective Learning – Study with Bach, Active Listening Classical Music, Fast Concentration, Clear Mind, was released in the year 2016. The duration of the song is 3:15. Download English songs online from JioSaavn.