I like wearing headphones as well, and do so when I practice alone. I know in the states they are banned in most leagues and tournaments because of the potential for coaching.
In netherlands its considered an antisocial and dick move, no one will stop you from doing it, but everyone will look down on you, and people are usually told so at some point, (love the dutch directness)and then stop wearing them. The general attitude is none of us are pros, it's a social thing at the end of the day and headphones take away from that.
When I practice it's usually Sinatra, Dean Martin, Nick cave, Leonard Cohen, maybe some Pogues.
If I want to be a bit more amped up switch it to crass, subhumans, krs1, or any other old school punk or hiphop.
I use bone conducting headphones tho, as I don't like to not hear my surroundings