In Nativitate Domini In Nocte. Par RYBA JAN JAKUB. The “Missa pastoralis in C”, published here for the first time, dates from about 1808. It belongs to a cycle of sacred pieces, a „Cursus sacro-harmonicus, “ which Ryba planned as Ordinarium and Proprium settings for all the Sundays and feast days of the church year. The “Missa pastoralis in C” is a pastoral Mass for the matutinal service at Christmas. As in the “Missa Pastoralis in B flat”, in this Mass Ryba makes use of concertante instruments: clarino and a bassoon, an instrument seldom employed solistically in a Mass, but which gives this work a unique character. / Messe / Répertoire / Solistes SATB, Choeur SATB, Basson, Clarine, 2 Vio