Listen to Harpsichord Concerto No.4 in A Major, BWV 1055: I. Allegro online. Harpsichord Concerto No.4 in A Major, BWV 1055: I. Allegro is an Instrumental language song and is sung by Tatiana Nikolaeva, Saulius Sondeckis and Lithuanian Chamber Orchestra. Harpsichord Concerto No.4 in A Major, BWV 1055: I. Allegro, from the album Bach: Concertos for Two Pianos and Strings & Concerto for Piano and Orchestra, was released in the year 2005. The duration of the song is 4:15. Download Instrumental songs online from JioSaavn.