in this interview, Clemens Flämig, choir assistant and permanent member of the vocal ensemble of the J.S. Bach Foundation, gives insights into the choir’s activities (in German).

This video features concert excerpts from cantata BWV 248 part V, “Ehre sei dir, Gott, gesungen” (Glory to thee, God, be sounded).

The whole performance and more information on the cantata can be found here on Bachipedia.