The problem is that these days society has attached labels to people who listen to certain music, you listen you Gaga? Gay. You listen to heavy metal? Goth. You listen to the Black Eyed Peas? Chav.
It's entirely ridiculous, no matter what your taste is, pop, rap, rock, metal, electronic, classical etc, it shouldn't matter and people shouldn't be judged for it, it's just music ffs.
But in answer to your question I sometimes turn my ipod down because I listen to a lot of foreign music, like Japanese, Swedish etc, so it can get a little embarrassing because of that. Not embarrassed because of the music, embarrassed because of the questions that immediately follow.