I don't know about you but I don't go to my freinds' parties cause of loud music. It ain't a matter of choice. To people who haven't already ruined thier ears on loud music, it is very very painful. I have been in tears on occasion from someone nearby turning up music to loud.
Rap, that doesn't matter. It is the volume. Doesn't matter type of music if it is loud, and the person doesn't generally listen to it, it equals intense pain.
