Listen to Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro online. Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro is an English language song and is sung by Camerata Academica Salzburg and Hans Reinartz. Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro, from the album Focus Your Mind with Classical Music: 80 Tracks, was released in the year 2015. The duration of the song is 7:58. Download English songs online from JioSaavn.