Listen to Symphony No. 26 in C Major, Op. 79 "Symphony On Russian Themes": I. Andante Sostenuto. Allegro online. Symphony No. 26 in C Major, Op. 79 "Symphony On Russian Themes": I. Andante Sostenuto. Allegro is an English language song and is sung by Leonid Nikolayev. Symphony No. 26 in C Major, Op. 79 "Symphony On Russian Themes": I. Andante Sostenuto. Allegro, from the album 101 Essential Classical Pieces by the Moscow RTV Symphony Orchestra, was released in the year 2012. The duration of the song is 17:43. Download English songs online from JioSaavn.