I also am Episcopalian, learned the same version of "Es' ist ein ros' entsprungen" that you did, and sing without a vibrato. I can occasionally produce one for certain types of music, but most of the time I sound like the world's oldest living boy soprano. *g* Which is why I've got the solo in Harold Darke's "In the Bleak Midwinter" on Christmas Eve, and not the solo in "Oh Holy Night".

And I, too, will fall asleep from alcohol consumption before I will get drunk. Although I can get *very* tipsy on one drink if I haven't eaten enough food beforehand.