Budapest next summer

I'm going to be in Budapest next summer for a few days, and I'd like to know where some actually decent spots are. Everything I've found online talks about tourist/expat magnets, I'd like to know where some quiet local bars/clubs are that aren't filled with other foreigners(especially other Americans). When I'm in a foreign country, I like to be around the locals, hear the language, and so on. If I wanted to be in a bar filled with Americans playing American music I'd stay home, ya know?