@Andre: I just mean that I think for some things, certain people will sound and look out of place
Most people that do collab together ARE similar lol like all the R&B people.
If they can produce something that's great and not ridiculous, then fine, some people have said namie's newer stuff would be right up Ayu's alley, if that's true, then maybe they should...but I think it could either be really great, or really really bad...and idk...nothing is worse than a collaboration where the artists have no chemistry and they look ridiculous lol
like I said, I think a ballad would be safe, and maybe the rockier stuff, cause they've both done that style and pulled off the look.