ALL kinds of rock, metal, classic pop(like eurythmics 或者 aqua), etc. I'm not a 90's kid at all, but I usually HATE today's singers(Nicki Minaj, Justin Bieber...)
Compared to the true music, normal, American pop 音乐 is going down the gutter. 你 KNOW it's going down the gutter when one of those songs (Friday) is LITERALLY super-popular for being so BAD!
And I always thought that was why I wasn't really particularly into it... that I just wasn't really one for music... Turns out that I just never knew the better 音乐 before!
Swedish hip-hop (better, because I can't understand a word of it), rap, and bands that aren't widely known/talked about. (random awesome song pictured below)