I just had to write a review for this (being a Sone and all). At first i thought i was going to hate this song (the whole fantasy girly thing) but when i actually watched the video i actually started to like it and it is currently stuck in my head. the clothes were very girly and cute but its still works and i kinda like the concept now. 9/10!
P.S SNSD was the LAST group i would expect to have a sub group. it was always "the power of 9" but whatever. the song was good.
P.P.S if i was to create my own SNSD subgroup i would probably pick Hyoyeon, Yuri and Tiffany because each of them brings something different to the group and they are my favorites AND I want more attention for Hyoyeon!! SM, start using her more.