Listen to Symphony No. 1 in C Major, Op. 21: I. Adagio molto - Allegro con brio online. Symphony No. 1 in C Major, Op. 21: I. Adagio molto - Allegro con brio is an English language song and is sung by André Cluytens and Berliner Philharmoniker. Symphony No. 1 in C Major, Op. 21: I. Adagio molto - Allegro con brio, from the album Beethoven: 9 Symphonies, was released in the year 2015. The duration of the song is 9:35. Download English songs online from JioSaavn.