The prelude to Charpentier 's setting ( H. 146 in Hugh Wiley Hitchcock 's catalogue ) is well-known in Europe because it is used as the theme music for the European Broadcasting Union , most notably the Eurovision Song Contest . The prelude to Charpentier 's setting ( H. 146 in Hugh Wiley Hitchcock 's catalogue ) is well known in Europe on account of its being used as the theme music for some broadcasts of the European Broadcasting Union , most notably the Eurovision Song Contest .