I have been with two ladies that insisted on playing music during the session. One did it off my laptop from Slacker.com. She logged onto her account and played what was there. The second brought her own laptop, and did her own playlist.
I have since read that some providers tell time this way. They know how long their playlists are, and know when to start winding the session down based on the music...and the guys rarely realize it.
I have really eclectic tastes. I listen to just about everything that I like, and I'm not limited to one genre of music. My playlists are mostly classic rock, but I listen to others. I have classical, country (Elvis' greatest hits), rock (Billy Joel, Chicago, Blood Sweat & Tears, Neil Diamond, Elton John), gospel, and anything else that strikes my fancy.
Since I travel a lot, I have an MP3 player, and noise canceling headphones for the planes and airports. But I also carry a portable speaker that I hook into my laptop. I love my music.