I LOVE Katamari

[Downtown]

Those who have played We Love Katamari or Katamari Damacy will know what I'm talking about, this stuff is incredible!!
Its like nothing else I've ever heard, I downloaded the soundtrack the other day and have been zipping about town with it bleeping and tooting its beautiful japanese-ness out of my car constantly for the last week. Its completely crap and stupid sounding but its just FUN and you cant understand any words other than Katamari so all you can do is just sing along in stupid random noises.
You know when you finally find something new or interesting in music that you just know is going to lead you into a whole load of new exciting stuff, thats how this feels, I dont get that much anymore, the last time was with that old genius Kate Bush but this time I have NO IDEA what to start with and since Dirty has given me so many good recommendations in the past I thought someone here must know a bit? Im looking for weird japanese music basically, I dont know what, j-pop probably, not hiphop or shitty dance stuff. I want weird noises and happy shrieking voices!

The best I've done so far is Dokaka who was on Bjorks Medulla so some of you probably know him but he hasnt actually made any albums.
Download this, its one of his tracks from We Love Katamari. Fucking awesome:

http://downloads.ffshrine.org/soundt..._the_rocks.mp3

So.....any recommendations?