An insteresting case of self-borrowing. Bach took music from this work for his own Mass in B-minor (BWV 191/1 corresponds to the Gloria in excelsis Deo, BWV 191/2 to the Domine Deus, BWV 191/3 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, 1745. This vocal score is a reissue of the one which was originally published to coincide with Bach Gessellschaft edition. As with all PLP scores a percentage of each sale is donated to the amazing online archive of free music scores and recordings, IMSLP - Petrucci Music Library.