Listen to Concerto in D Major for Strings & Continuo, Op. 7 No. 1: III. Allegro assai online. Concerto in D Major for Strings & Continuo, Op. 7 No. 1: III. Allegro assai is an English language song and is sung by Heinrich Klug and Jörg Ewald Dähler. Concerto in D Major for Strings & Continuo, Op. 7 No. 1: III. Allegro assai, from the album Vivaldi & Albinoni: Concerti, was released in the year 1976. The duration of the song is 1:26. Download English songs online from JioSaavn.