Depends. Am I going on a long freeway ride or am I hitting the canyons?
For instance, when I ride to Ojai to go canyon riding, the music is on because Ojai is an hour away and it's all freeway. Weekends almost always with no real traffic, so yes, the music is on.
Once I'm at the bottom of Ojai 33, the music is OFF. No real need to have another distraction while you're trying to get off.