Listen to Piano Concerto No. 1 in C Major, Op. 15: III. Rondo. Allegro online. Piano Concerto No. 1 in C Major, Op. 15: III. Rondo. Allegro is an English language song and is sung by Wilhelm Kempff and Paul van Kempen. Piano Concerto No. 1 in C Major, Op. 15: III. Rondo. Allegro, from the album Beethoven: Piano Concertos & Appassionata, was released in the year 2010. The duration of the song is 9:35. Download English songs online from JioSaavn.