Perpetuum mobile Coeck, Jan Adams, Chris Chante Coeck, Jan Adams, Chris Kerstcantate 'Sing aloud on this day' (choir) De Praetere, Geert Kerstcantate 'Sing aloud on this day' (score) De Praetere, Geert Kerstcantate 'Sing aloud on this day' (parts) De Praetere, Geert Boswording De Praetere, Geert