Read a news article on music lovers "according to new research":
Fans of blues, jazz, classical and folk music are likely to be intelligent, tolerant and politically liberal, researchers report in the June issue of the Journal of Personality and Social Psychology.
Country and religious music fans tend to be cheerful, outgoing, reliable and conventional, while alternative and heavy metal music lovers tend to be physically active, curious risk-takers.
As for rap/ hip-hop and dance music fans? They are often outgoing, agreeable people who generally eschew conservative ideals.

Eh. So what do psychopaths listen to? And do people who listen across music genres have personality disorders?