Yatta!! After listening to Busu ni Naranai Tetsugaku for about a thousand times, I've finally get the whole lyrics -- though I'm not 100% sure if what I all heard are right, especially the English lines. We know how Japanese pronounces their English, it is a bit different, so it gave me some headaches mainly at the chorus. 
And I thought it would be hard for me to determine who's member is singing on this line and that line, but thanks to the cameraman for giving me enough hint to know who's singing.
Riho surprised me how awesome her dancing is.
As I expected, Reinya-chan has the most number of lines. Nice one Tsunkuboy <3 (^w)

but I didn't expect Risako that much, as I thought Kumai would have some more leads.
And as for S/mileage, only Yuukarin has had the biggest exposure among the group... 





( Maybe? )