XVII. -- Missa in Dominicis Adventus et Quadragesimae for Sundays in Advent and Lent Cantors sing underscored parts. Asperges Me (ad libitum; shorter version) x c.

Kyrie (x) xv-xvii c.

or: Kyrie xiv c.

Credo I xi c.

Sanctus xi c.

Agnus Dei xiii c.