When prosecutors introduce song lyrics as evidence of crime, defense lawyers call the University of Richmond's Erik Nielson, a rap expert who helps juries understand the difference between art and life.
While the two branches of music might appear to have nothing in common, they rose to pop-culture establishment in very similar ways. Today, they share the same songs and the same stage.
New research from the Netherlands suggests a youngster's music preference can predict whether he or she will be a shoplifter or vandal four years later.