Listen to Sonata for Cello and Piano in B-Flat Minor, Op. 8: I. Allegro Ma Non Troppo online. Sonata for Cello and Piano in B-Flat Minor, Op. 8: I. Allegro Ma Non Troppo is an English language song and is sung by Michel Beroff and Marc Coppey. Sonata for Cello and Piano in B-Flat Minor, Op. 8: I. Allegro Ma Non Troppo, from the album Dohnanyi: Serenade & Sonatas, was released in the year 2004. The duration of the song is 8:23. Download English songs online from JioSaavn.