Favorite driving music

While the system in my car (a serviceable Harmon Kardon unit that is oem from BMW) is no where as good as my home system, it does get the job done while I'm tooling about.

I generally prefer uptempo jazz while I'm driving on winter roads in the northwest: heavy brass - sax players like Illinois Jacquet, King Curtis, Ike Quebec or Gene Ammons. Lately, as the weather's getting better, I've also been listening to Gatemouth Brown, Los Lonely Boys, Katie Webster and the Phantom Blues Band. When the sun comes out, and the top goes down, I'll probably start slipping in discs by Taj Mahal or even the Beach Boys. Of course, most selections are motivated by the kind of driving I'll be doing.

What's in your vehicle's cdp right now? And do you have any favorites for freeway driving? How about those demanding back country roads? Late night?