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 Philharmonia Orchestra and Herbert Von Karajan. Symphony No. 1 in C Major, Op. 21: I. Adagio molto - Allegro con brio, from the album All That Beethoven, was released in the year 2015. The duration of the song is 7:32. Download English songs online from JioSaavn.