Yeah I honestly think so too, but then that would mean Yoona had no parts in this song. My other theory is that Yoona is singing on one of these really high parts after either Sooyoung or Hyoyeon. But I just keep hearing Sunny in those parts, so what do you guys think? Did they cut Yoona out of the song? lol.
Thats what I initially thought so too, that she maybe would have sung those high bits - but its all Sunny - definately.
I think she didnt have any lines. Which means she doesnt sing in this song at all, since this song doesnt have a chorus-type part where everyone sings..
So what happens when they sing this live? (Which is likely as this song is one of the most popular tracks) :S
I really LOVE the beginning. Sooyoung does such a good job

It makes me keep wanting to repeat this song..
Im so glad she has more lines in this album!