Stetit Angelus, Gregorian Chant

On September 29 we celebrate the feast of St Michael the Archangel and at the Offertory at Mass, we sing this most beautiful of chants, "Stetit Angelus". From Dom Gaspar Lefevre's commentary on the liturgy:

"September 29 was formerly dedicated to all the angels ([hence the text selection for the] Introit, Collect, Gradual and Communion) wherefore Pope Boniface II, about A.D. 530, chose that date to dedicate a church in the great circus, at Rome, to St Michael.