Dearest remix, vocal track

[channy]

Everytime I listen to my favourite version of "Dearest", the ''Acoustic Piano Version'', I got a feeling the vocal track is different from the Original mix, which would be very unusual. Most remixes only get a new instrumental and that's it but Ayu's singing on this very remix sounds so different.

Has anyone else similar feelings or is their even evidence that Ayu re-recorded the vocals for this remix?