I had to go look - I *do* actually have music on my iPod, but I rarely use it to listen to music (I mostly use the internet, my pattern/fabric database and the shopping list, oh, and my calendar). I'm kind of all over the place, musically, here's a sampling of the artists I have:
Billie Holiday
Bing Crosby
Brad Paisley (country)
Carole King
Eagles
Jars of Clay (Christian)
Linda Eder (Broadway)
Yo-Yo Ma
Moxy Fruvous (Canadian, um, alternative, I guess?)
Nickel Creek (Bluegrass)
Rockapella (Carmen San Diego anyone?)
Wicked (not an artist, I guess - the cast recording)
See? All over the place.
Mostly, though, I listen to my Sirius radio in my car - when I'm not stuck listening to kid's music, it's either the 40's station or the Broadway station.