The Bestest Flash Mob EVAR

At least, so far to date... There are all sorts of Flash Mob events these days. I thought one of the coolest was the great freeze in Grand Central Station. That is, until Susan passed on the most awesomest Do-Re-Mi flash mob ever conceived!

My list of thoughts on the subject:
A) Why are flash-mobs so frickin awesome?!
B) Techno Sound of Music is AWESOME!
C) Can you imagine what rehearsals for this must have been like?
D) I couldn't stop grinning all the way through, how AWESOME!
E) On the downside, not a song I want stuck in my head all day...