[Jam Man]

...is sexy. I've been playing bass in a funky jazz band with a few buddies and we found this girl who has a great voice to jam with us. This girl is prob a 7.5 with big boobs and a nice ass, so naturally I'd like to bang her. I think I'm over thinking the best way to do this and I'd like to hear your guys thoughts. Here's some more details:
I am the oldest one in the band, and she is a month younger than me with all the other guys a year younger than her.
We usually jam at my house. I live with my brother and another guy in a really cool place. Everyone else, including her, lives with their parents.
I am also in another rock band where I play lead guitar and vocals. DHV for sure, I need to get her to one of our shows.
I've taken just about every chance to tease/flirt with her and be a dick. Making her laugh quite a bit.
This girl is fun to be around, single,and I feel we have good chemistry, so how do I isolate her and seal the deal?? If anything goes bad relationship wise down the road ill just quit the band cuz I'm already in a better one, I'm basically just sticking around to try and stick it in.

[guerrilla]

whatt? after a gig, you're all drinking...one thing leads to another

[Jaylow]

Ask her to come over and listen to music. Say you found a song that is inspirational and want to make one similar for your guys band to play.

[ChocolateCockOfZeus]

Tell her you're writing new material and want her to come over and help you out.

[Roadrunner]

This should be a no-brainer. Ask her to come over and jam or listen to music or to write music or what have you and simply escalate from there and close the deal. The only problem with your situation might be that you have to escalate fast or she might discount you as a sexual prospect.