I recently saw the University of Heidelberg’s student symphony perform Carl Orff’s Carmina Burana in the Stadtstheater (which is very nice), and I would strongly recommend that you go check it out if you get the chance. They perform at the end of every semester, are talented and the tickets are affordable. It is nice to be able to see a symphony that is oriented such that students are welcome and without having to go to Frankfurt.
This is not their performance, but if you are not already familiar with the piece and would like to check it out, here you are:
It was a very very powerful performance in the old city-theatre – an excellent way to end the year.