O be joyful Slootmaekers, Martin Iubilate et cantate Slootmaekers, Martin Arthropodoi (equal) Schroyens, Raymond Arthropodoi (mixed) Schroyens, Raymond Vlaams Magnificat Dubois, Chris Sigi and Julia, de musical (vocal part) De Baets, Thomas Sigi and Julia, dé musical De Baets, Thomas Sigi and Julia, de musical (instr. Parts) De Baets, Thomas