I usually like electronic/metal, but I've heard some great anime openings(Attack on titan's second opening, Mirai nikki's opening first, sword art onlines first) that's got me really interested. But I've always loved how beautiful their more traditional music is. Very peaceful. What was it like going? I haven't been, yet ._. It's something I really want to do though.
If you go to a large enough city you'll probably get to see street performers. Some are not so bad. And if things haven't changed since I was there you can still go to big chain stores like Tsutaya and listen to their rental CDs (which is a great time killer).
There's loads to talk about. And the music is very nice too. I always admired how ''flashy'' jrock/jpop is. It's something I look forward to seeing when I finally get to visit. :3