I have been going to Yugongyishan fairly regularly for about a year. I first started going to join in the Beijing juggling club on Monday nights, but then I starting to learn about the music scene there too. For a Beijing bar, I think that Yugongyishan has a pretty diverse bunch of bands come in to play. I heard the Mongolian folk group Hanggai for the first time at Yugongyishan, I hear that they have a lot of punk rock, and I have never made it there but I hear that there is the local hip-hop dance battle there on the last Saturday of every month. It is located conveniently close to the Zhangzizhonglu Line 5 subway stop, and there is a bus station right outside the door too. The dance floor is spacious with plenty of room to jump and bounce around in, although I wish the lighting in the drinking area was a little bit better. Easy to find, and with a fairly good selection of music groups playing, I recommend you to check this place out.