I actually heard ai otsuka's album TRiCKY and I have to hand it down to her.
I'm not really into ai, her only songs I ever liked were sakuranbo and planetarium, but she really changed her style since her come back with this album and that's how NAMIE's album should have sounded. It's Japanese and the style is great (and fits namie as well).
So now I understand how people came to this thread and claimed that ai snatched namie's wig