Listen to Music for The Royal Fireworks in D Major, HWV 351: IV. La Réjouissance - Allegro online. Music for The Royal Fireworks in D Major, HWV 351: IV. La Réjouissance - Allegro is a German language song and is sung by Slovak Philharmonic Orchestra and Oliver Dohnanyi. Music for The Royal Fireworks in D Major, HWV 351: IV. La Réjouissance - Allegro, from the album 50 Movie Songs: Classical Collection, was released in the year 2015. The duration of the song is 3:50. Download German songs online from JioSaavn.