Funny how John Hopkins, Univ of Chicago, U.T. and Duke University did a joint research survey 2 years ago about music and the results were the music choice of a majority of people who have bouts of depression, alcohol addiction or some other form of mental challenges preferred country! Hip hop was the choice of those who dropped out of high school, barely graduated with a C average or received a GED. Classical music was the choice of those in the medical profession,(Doctors, nurses), along with traditional Jazz,plus "oldies" Same for Business administrators,and Corporate execs. Rock was preferred by lawyers,military personnel and Police. I thought it was malarkey until a friend of mine showed me a copy of the New England Journal of Medicine it was printed in.
How nice. Radio uses qualitative studies like media audit and scarborough and others that correlate directly with usage. Nice statistic, but market by market this means nothing.