Listen to Symphony No. 2 in B Minor "Heroic": IV. Allegro online. Symphony No. 2 in B Minor "Heroic": IV. Allegro is an Instrumental language song and is sung by Evgeny Svetlanov and Ussr State Symphony Orchestra. Symphony No. 2 in B Minor "Heroic": IV. Allegro, from the album Borodin: Symphonic Works, was released in the year 2012. The duration of the song is 6:20. Download Instrumental songs online from JioSaavn.