Listen to Souvenir de Florence, Op. 70: IV. Allegro vivace online. Souvenir de Florence, Op. 70: IV. Allegro vivace is an Instrumental language song and is sung by Mstislav Rostropovich, Genrikh Talalyan and Borodin Quartet. Souvenir de Florence, Op. 70: IV. Allegro vivace, from the album Borodin Quartet Performs Complete String Quartets & Souvenir De Florence, was released in the year 2013. The duration of the song is 6:59. Download Instrumental songs online from JioSaavn.