Everytime I go into Musik Kappa I'm amazed at the amount of customers and how they're spending…read moretheir time. Everyone is occupying their time in one or more of their many sections: There's a sheet music section, a keyboard section, a guitar section, an electronic accessory section, a percussion session and a "classica" instrument section with trumpets, violins, clarinets, etc.
I recently had my guitar re-strung and polished there and it only cost 10 Euro, including the new strings. Andre, the owner, is a real treasure. He speaks German and English (at least) and loves his store and his customers.