On motorways Creed, Nine, Inch Nails anythink rocky/punky. On the twisties nothing I need to concentrate on the road and whats happening around me. I would be wary on the roads that require a lot of work being distracted by anything. We use our 6 senses and reducing any one of them can be enough to cause problems.
Before any body comments we have 5 senses I firmly believe we have an inate 6th sense its not always accurate but how often have we all had that "feeling" and its turned out to be spot on and saved us some serious grief.
