The Prelude to Charpentier’s ‘Te Deum’ has opened Eurovision song contest for over sixty years.
In the late 1600s, French Baroque composer Marc-Antoine Charpentier (1643 - 1704) wrote his grand polyphonic motet Te Deum. And although he authored six settings, only four of them have survived.
Well, a monumental melody. And - french music french organ :)