Gloria in Excelsis Deo, Bwv 191

An insteresting case of self-borrowing. Bach took music from this work for his own Mass in B-minor (Part 1 corresponds to the Gloria in excelsis Deo, Part 2 to the Domine Deus, Part 3 to the Cum sancto spiritu). This unusual cantata, the only one with a Latin text, may have been written to celebrate the Peace of Dresden (which ended the 2nd Silesian war) and first performed on Christmas day of 1745. This vocal score is a reissue of the one which was originally published to coincide with Bach Gessellschaft edition. Unlike so many of the on-demand scores now available, this one comes with all the pages and the images have been thoroughly checked to make sure it is readable.

• IMSLP page
• Wikipedia article