I think European music is more creative than American or Japanese. <3 I live in Europe and I've listened to "our" music more. It's very nice and original. I, for myself, like the music from my own country, Finland, but also Brittish music has found its way to my hear (yet I should listen more of it). <3 But I do like japanese music a lot. Most of the artists that I'm listening to are very highly influenced from western music. But I really like that vibe. I also love sexy songs a lot. I even like these songs more than ballads. And I'm pretty much a R&B and hip hop person. :3 I love this kind of music. It's more like me. I've listened to R&B since my childhood so I guess it has some "familiar" feel to me.
And Lady GaGa... Well, I haven't listened to her songs so much but I do like the singles that I've heard. She has good songs and I don't really care about her sexual appeal. To me music is MUCH more important than the way the artists look like. Same goes for European and Japanese artists (Koda Kumi who I LOVE so much). I don't even take those overly sexual lyrics seriously. Most of the time I just lol at those but I still listen to those. It doesn't matter from where those songs are from. I just say "lolled" and keep listening to it. I've gotten over this over sexualized images/thingies/whatever it is appeal.
But sure, I still think that western music is nowadays a lot more creative than japanese (I don't listen to korean or chinese music, I'm not very interested so I won't be talking about Asian music as a whole) but I think that Hikki and Kuu can still be a lot more creative than Ayu to me nowadays but these are just examples. I should listen to a more underground music of Japan as well. Maybe I will change my mind.
And now I forgot what else I wanted to say. Well, I'll post again when I come up with something. But I gotta say that I LOVE this topic. <3