III. Diminution Diminution occurs when larger notes are broken into many parts by the smaller ones in motion. The which must not...

‘To sing with fidelity... is to sing so that anyone of those singing together should remain in the form of those notes that were...

‘In honour of immortal God, the Supreme Pontiff Nicholas V filled the most sumptuous sanctuary that he had erected among the papal courts...

‘Another fault which is more obvious than the others is singing high notes with an unstintingly full and powerful voice...