I think part of the problem is that music is such a huge part of my life. My dad is a professor at the local university, teaching Music Theory, so I really can't remember a time when I wasn't involved in something musical. Some of my most annoying memories of my father are of him quizzing me on who wrote whatever piece happened to be on at the time, completely by ear. I learned how to do it pretty well eventually, and I think it helped me as a musician, but it was still annoying.
Now, as a result, my tastes run a little more to the classical (which is a misnomer btw) side. My choice for music while I'm doing anything is generally soundtrack music, mostly because it doesn't have any words to it, but also because I love what that kind of music can do to people. I find it fascinating that many, if not most, people who go to the movies hardly notice the music at all, and yet it is so influential on a subconscious level that viewing the film without any music loses the enjoyment. (Talk about an awkward sentence! I am SO sorry, I'm obviously not at my best at the moment lol) I've done some research on the subject, and I hope to do more as soon as I can find the time.
Otherwise, I'm open to pretty much anything that has a tune I could sing along with. I have a few in just about every genre that I love and will listen to millions of times over. Pretty much everything else I'm okay with until I've heard it about 15 times in a day and then I'm sick of it (sorry, pet peeve on the radio station I'm forced to listen to at work showing there).
Oh, and another thing I love? Finding a song that is just PERFECT for _______. I love realizing that a song and its lyrics exactly describe a situation I'm trying to write, or a ship/fandom that I'm in love with. If I had the talent, I would have a youtube channel full of videos of fanvids, setting clips to my favorite tracks!
There you have it! My life in music =)
P.S. If anyone is interested, the soundtrack for writing this post is "Kayla" [link to a youtube version] from the movie X-Men Origins: Wolverine because I have just discovered it through my Pandora and it is SO BEAUTIFUL!