Harmoniemesse
In his sermon today for the Mass of Pentecost, the Holy Father mentioned that the Cathedral Choir and the Kammerorchester of Cologne sang Haydn's Harmoniemesse. He said that "the music and the singing which accompany this our liturgy, help us also to be united in prayer"
Here is a short clip from the beginning of the Gloria:
Here is a short clip from the beginning of the Gloria: