Midrange
Pecos
Rest house rd off brigade road. 60s retro pub with a mural of jerry garcia. often crowded on all 3 floors, including the pleasant roof-top seating area. free popcorn with every pitcher of beer. cards are available for frequent customers which make every tenth pitcher of beer free, but you may have to ask several times in order to acquire one and to get it updated.
Le Rock Pub Cafe
Rest house rd off brigade rd â+91 80 4123 1001. the latest watering hole in bengaluru. rock music across the board screened on large plasma panels; every song can not only be heard but seen as well. coffee, kingfisher beer, cocktails, food and bengaluru's first oxy bar. open from 10am-11:30pm.
Opus
Palace cross road, near sankey rd, â+91 80 2344 2580, (http://opusbangalore.blog...). a chilled-out, ex-pat friendly lounge with a large outdoor space. has karaoke on most sun and wed kroaknights as well as regular live music and dj dance nights. you may need to book ahead on theme nights.
Top end
Kosmo
Formerly cosmo village on magrath rd is now f bar and kitchen 2011. 3 separate areas including a terrace. 81 ali askar road cross off cunningham rd. this nightclub is a remodeled colonial villa on a quiet lane, with excellent djs and expensive drinks, and attracts a wealthy clientele.
Budget
Most bars and pubs in the city are somewhat upscale, but many inexpensive restaurants serve beer and good quality food.
If you just need to go out you could go to one of the bars, but if you would like to have a great social experience and are in the city for a considerable period of time consider becoming a member of one of the social expat clubs in the city. The IVES Club (http://www.ives.in) offers a meeting for it's members every Saturday at one or the other popular nightclubs in Bengaluru, its members are interns, expats, volunteers and exchange students residing in the city.