Probably the best community made boss I have seen. Everything from the opening cutscene to the boss itself was well made and the fact that it featured my favourite track in the game didn't hurt either.
very nice take on the original lbp2 boss (negativitron), my only suggestion would be to do a little more with the piano itself.. let it do little riffs etc.. but besides that.. not bad.. not bad at all!
LBP3 storyline, right there. If they ever make one that is. This was fantastic, I could play the whole series multiple times when you finish it. It is truly up to the standards of Media Molecule and deserves an Mm pick. EDIT: Which it now has.Yay.