Ayu's change ?!

[kaito_moonlove]

Hi ayu'fans, I have just loved ayu for a year, I was impressed and hypnotized by her songs, excellent performances.
But over the year, I have found out that her voice had changed. When she is singing,i fell strange !
Although many people said that her performances in a nation fes 12, hotel love songs 2012, Wake up CDL, the "vocal" was quite bad, I still love her any way
I used to want to choose "together when perf version" in CDL Wake up to join the "Love Contest MV" but my friends told me to use medley in "Do It Again" instead . Very Very sad !!!
I have also enjoyed the records of her songs in "A Best Live", it is quite disappointing !
Do you have any idea ?
* Sorry for my bad English*