On the course, nothing, because I don't listen to music. If I did, it would be some classical. Something to calm me and make me internalize my surroundings. After a bad round I listen to "For Me This is Heaven" by Jimmy Eat World because all think about when I listen to that song is my wife and I am reminded at how truly blessed I am for her and my kids. Puts bad rounds in perspective because those high scores don't matter.
I like playing with golfers who bring music even though I never do myself. Old stuff works best for me but there again I'm old too. I think I've made more birdies, and thrown more darts in my THPer rounds when an AC/DC track is rolling than all other artists combined. IDK why, it just happens?
I played today with a retired white guy from Fort Myers Florida. Surprisingly, He was a huge reggae fan and blasted it on the course. Surprisingly good music to golf by, especially considering I typically hate music on the course.