Op, op herders Trad. Stryckers, Piet 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
