Chapter (or Convenitual) Mass
Chapter (Or Convenitual) Mass is the highmass or mass of the day, usually sung before 10 A.M.; in France the hour is 8 or 9 A.M.
Chapter (Or Convenitual) Mass is the highmass or mass of the day, usually sung before 10 A.M.; in France the hour is 8 or 9 A.M.