MrMoondoggie wrote:I guess the dance background of Ayumi helped and i think Riho has a background in dance too? I feel like i remember something about her having dance training in the past. So if they both have a lot of experience with dance classes they have likely done this kind of thing before so it's easier to do something original.
i didn't watch the clip until now, otherwise i would have read this comment and replied to it much sooner.

Sohee mentioned Riho has been dancing since she was 6, but i just want to emphasize it.. dancing is what Riho eats, breathes and sleeps. it's so much so her thing that at first i thought you were being funny with this comment.. even now i can't be sure you weren't.

she trained at a performance arts school in Hiroshima, there's a few videos of some of her performances out there. in fact, there's a video of when they performed for Perfume, who also went to that school a long time ago.
i was going to post that video but couldn't find it on my initial search, and got distracted by TINY RIHO!!!

[youtube]FFpddLWLJwo[/youtube]
it starts out kind of simple and gets a lot better towards the end. i think Riho might actually be the best dancer there (despite the tiny part she missed at the end, but even then she didn't miss a beat after catching up!).
if you can't stand the song, at least watch from the 2:00 point, that's when it all levels up (Riho is the tiniest girl, in case you don't catch the caption at the beginning).