Woooow I loved that. Have to go to work really soon so this'll be brief.
A few things I wanted to mention. Firstly, while I can see how some will feel that Pinkie was too much, I thought it was worth it for some of the best comedy the show has done so far. I actually choked a bit when Rarity whacked Pinkie with that poster. I don't know what it was about that, but it was just so funny to me. Also Pinkie's line "No offense, but you kinda sounded like a dude." was perfect.
Song was catchy as hell and not only that, with Fluttershy's changing voice as well as Big Mac, we got a few different versions of it too. The lesson and resolution were great. I thought I was going to feel a little meh when we were shown Fluttershy performing on a stage, but then we see that it was just in front of her friends and animals. Then we see that she's still not able to perform in front of others, but maybe someday. That's great and handled exceptionally well. I really really hate public speaking (I even get a little uncomfortable at family gatherings when I start talking and everyone turns to listen) so the resolution of that problem could've been a problem.
So, that was kind of a roundabout way of saying that it was great, I'm happy, and now I have to go sell stuff.
