Listen to Concerto for Organ In D Major, RV 124: I. Allegro online. Concerto for Organ In D Major, RV 124: I. Allegro is an English language song and is sung by Anton Nanut and I Solisti di Zagreb. Concerto for Organ In D Major, RV 124: I. Allegro, from the album 50 Essential Vivaldi, was released in the year 2010. The duration of the song is 2:15. Download English songs online from JioSaavn.