Original: Gregorian chant was organized , codified , and notated mainly in the Frankish lands of western and central Europe during the 10th to 13th centuries , with later additions and redactions , but the texts and many of the melodies have antecedents going back several centuries earlier .
Simplified: The prayer '' santus , sanctus , sanctus , '' which means '' holy , holy , holy , '' comes from the Jewish prayer '' kadosh , kadosh , kadosh .