^Whoa they totally caught me off guard with that Oh! demo version O___O
The video is the EXACT same with the previously released Oh! dance/practice version! But in the previously released video, they changed the audio with the official Oh! while I'm sure the video itself was recorded with the demo version one. Just look here, I just realized that in this previously released video, some of the lip-synching didn't match the song..
Whoa I never realized it despite watching the vid thousand of times O__O;;