B-Dur-To a greater extent than almost any others Mozart's Masses combine a very high degree of artistic accomplishment and tonal beauty with fulfilment of the demands made by the Liturgy. Even the textually expansive movements 'Gloria' and 'Credo' are in most of Mozart's Masses short enough to meet the requirements of a festive service today as in his time. The choral parts are not too difficult for well-trained amateur singers.