Heavy metal and classical music
Often said this to people that in terms of popularity they both have their own set base, but not often people will break their traditions bar one song in every 100 that catches on. Anyway reading on the metro today a study that was conducted which said that fans of both have a lot in common particularly in terms of talent and creative ideas etc, very interesting that an arguement i always used without back up is actually true, so assumptions are correct :D:
http://www.dailymail.co.uk/news/arti...udy-finds.html