Music during Gretchen sensual scene in lab?

I just watched this movie, and it went from "OK" to "it sucked" by the time it ended. Blah.

Anyway though, I very much liked the song that was playing when Gretchen took that one guy into the anatomy lab to have sex with (she was doing the dance on the table top first). Can anyone tell me which song was playing? 30-second sound clips from iTunes haven't helped me pinpoint exactly which song it was. Thanks.