What Scotty posted earlier... yeah, someone got lazy. Not just with Miki's animation, but at other points, the hand positions look fairly unnatural, as if the animator was just "meh let's not animate the hands and leave them in their default position, they won't notice." The fact supports were just standing around sometimes, okay fine, Kimi wa Melody isn't exactly the most energetic song.
...I still want to see Futatsu no Tsuki in longcam sometime, as I find there's an awkward camera angle that just... agh. That said, at least they brought in those songs, esp. Matane, because I know that one has been in fairly large demand.