This will seem like a joke, but it isn't. I listen to "woman with acoustic guitar playing in coffee shop" music while lifting. Not folk music, but very relaxed, Sunday morning, lots of feelings and butterflies and women in sundresses and boots.
My wife says it's because I'm a contrarian. That or I secretly want to be a misunderstood twenty-something girl just trying to make it in the big city. Whatever the reason, it puts me in a mood where I want to squat or press the barbell through the ceiling.
Most of my favorite bands are angry punk bands. Listening to them relaxes me rather than pump me up.