Listen to I. Allegro con brio online. I. Allegro con brio is an Unknown language song and is sung by Charlotte Margiono, Monteverdi Choir, John Eliot Gardiner, Rodney Gilfry and Orchestre Révolutionnaire Et Romantique. I. Allegro con brio, from the album Childrens Fantasies, was released in the year 2015. The duration of the song is 7:18. Download Unknown songs online from JioSaavn.