Listen to Symphony No 1 in C major, Op 21 - Adagio molto - Allegro con brio online. Symphony No 1 in C major, Op 21 - Adagio molto - Allegro con brio is an Unknown language song and is sung by Hungarian State Orchestra. Symphony No 1 in C major, Op 21 - Adagio molto - Allegro con brio, from the album Classical Slumber Time For Children, Vol. 49, was released in the year 2022. The duration of the song is 6:02. Download Unknown songs online from JioSaavn.