O be joyful Slootmaekers, Martin Iubilate et cantate Slootmaekers, Martin Clash (vocal part) De Baets, Thomas Clash (score) De Baets, Thomas Clash (instrumental parts) De Baets, Thomas Nativitas James, William G. Van der Roost, Jan F.J. Trois ballades Debussy, Claude Bikkembergs, Kurt