I wouldn't say that this MAD is particularly good, but it's a K-On!-ized "Macarena," so I had to share it.
There's less dancing than there probably should be, and a lot more Mio crying than there needs to be, but this Nico Nico Douga find will have to fit the bill for now. Really, maid transformations have no place in the dance, but I'll let it slide this time.