Yes, it's that simple. You need to put your self-assured face on, and approach her. Start with "Hi." If she finds you attractive, she'll listen to what follows. Sorry, but that's real talk. You didn't approach her because she seemed well-read, did you? Expect to be sized up on the same superficial level, at least initially.

Continue on your genuine tip. Make a joke about the bar you're in, like commenting on the DJ's insistence on playing reggae hits from the 90's: "Is it just me, or does playing "Heads High" automatically call a DJ's credibility into question?"  Make it sound as witty and effortless as you can muster. If she cracks half a smile, you're in.