If you didn't know yet, you should know that I am also a professional, classical singer and this week I'm off to sing some--surprise--German music! (OK, you're not surprised, I get it.) I'll be in Sioux Falls, South Dakota to sing Bach's B Minor Mass on April 22 and 23.
When I lived in Germany I sang with the Gächinger Kantorei, now renamed as the Gaechinger Cantorey, with the Bachakademie Stuttgart. At the time Helmuth Rilling, its founder, was conducting most of the pieces, and now it is lead by Hans-Christoph Rademann.
The Gaechinger Cantorey is actually touring this piece in the US right now, here is their schedule.
Here is a video of a performance with Helmuth Rilling conducting. (It's from 1985 so get ready for some 80's hair!) I highly recommend you give it a listen if you haven't before. To learn more about the piece, check out this article from Classical Notes.