Holy Smoke (1999)

Ruth Barron: Ok tampax tool, I'm gonna give it to you right up your arse. All this "man-hating" shit for a start. "Oh she criticised me, I'll call her a man hater!" I know what you want from me, you just want a youthful pussy transfusion, preferably one you can take home to show the men folk what a beautiful post you got to piss on. Jeans pressed, cowboy boots... is that a uniform for individuals, is it? I want a young man.
PJ Waters: Your physical superiority makes you unkind.

Question: After Ruth comes back home, she is driving out to the emu farm whilst listening and jiving along to some tune. Can anyone tell me what tune it is, and who it is by?