^I agree, when i first heard it, I didn't even like it that much, now its a close second behind Yume to Gengitsu as my second favorite of the shuffle groups songs and performances.
Dude, the same thing happened to me! I even skipped it like the second and third time I rewatched the concert but then I saw it one more time and I am now eager for the concert to get to that part ASAP when I play it.