I love this!
I don't really like the song itself at the moment, but I like how sunny got a "harmony" line near the end!!!! Yay, someone different. I really like how sooyoung sounded in her one line as well. LOL. Yuri seems a bit unnatural but was ok xD
Poor hyoyeon didn't get a line at all. Or not that I noticed.
Edit:
WTFFF LOOOOOOOOL I saw a youtube comment that said "Sorry but that huge cockroach at 0.50 was so funny" and then someone replied "wtf great vision" HAHAHAHAHA. seriously wth I would have never noticed that.
Hoot!