Listen to Vivaldi: Concerto for Strings and Continuo in B flat, R.163 "Conca" - 3. Allegro online. Vivaldi: Concerto for Strings and Continuo in B flat, R.163 "Conca" - 3. Allegro is an Unknown language song and is sung by Venice Baroque Orchestra and Andrea Marcon. Vivaldi: Concerto for Strings and Continuo in B flat, R.163 "Conca" - 3. Allegro, from the album Vivaldi Winter Nights, was released in the year 2020. The duration of the song is 0:55. Download Unknown songs online from JioSaavn.