If you want to get into the Xmas spirit I highly recommend this one, having seen the Baritone in other concerts. It's worth going just for him! I've attached the flyer, it's a Free will donation concert.
Here are the details just in case:
Tuesday December 15th
Randal Turner –Baritone
The International Protestant Church of Zurich
Free will donation portion of proceeds will go to MédecinsSans Frontières