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 O kerstnacht Sweelinck, Dirk Haspeslagh, Jan Horrors Slootmaekers, Martin Compulsory work IKV 2013.