[truehappiness]

Utada isn't really that good of a singer imo. With her... it is more that there would never be any reason whatsoever for her to lipsync so we don't get it from her. She really doesn't tour much anyway. I think of Ayaka Hirahara or Angela Aki as really good Japanese vocalists who are probably well known for their voices and sing live all the time like Adele.

Ayu does really well in a stripped down setting though. The more things are going on, the more likely that her vocals are going to go haywire.