Record stores (Plattenläden) in and between Heidelberg and Trier, Germany

Spending some time traveling the Christmas markets in a few weeks. Seems like a long shot, but does anyone know of interesting record stores in southwest Germany?

 

Used or new? CD or vinyl? Which genre(s)?

 

Both new and used, both CD and vinyl, indie, rock, jazz, schlager, experimental and beyond.

 

There really aren't a lot of larger cities between Heidelberg and Trier.

 

Well, no, but we'll be stopping at basically every Kristkindl Markt between them over the course of the week, and sometimes smaller towns have record stores too. But yes, I'm assuming most will be in the two cities.

 

There is Come Back in Mannheim (address is: S1,17 - no, this is not a mistake).

Other shops I can recommend are located in Darmstadt and Frankfurt am Main, but I guess they are too far away from your route.