Hmm...well at the moment I'm listening to "Within Temptation" because they are AWESOME!!! (especially their song "what have you done") but I also love music from bands like "Celtic Woman" which is more of an Irish clasical/celtic style of music.
I also Love love LOVE Japanese music!!!!!
I'll listen to just about anything if the voice is nice and the lyrics aren't terrible. That's my problem with half the music that's 'popular' right now. The lyrics mean absolutelY NOTHING and it's just all random and it's just...not nice to listen to at all!