Hee hee...sorry but Lang Lang reminded me of Mr Toad, from The Wind in the Willows. There is an old animated series (David Jason does Toad's voice). In one episode, he tries to impress Ratty and Badger & Mole by saying he has learnt the piano. Meanwhile , he gets a pianola and Billy Rabbit gets the pianola working by riding a bike( Don't ask!).
Badger, Ratty and Mole are sat ready for the 'performance' and Billy Rabbit is hidden behind the curtain.
Anyway, the faster Billy Rabbit cycles, the faster the pianola goes and the faster Mr Toad has to 'play' and he forgets to play at certain places...and it's all very funny! Mr Toad, by the way, plays like Lang with appropriate arm movements e.t.c.
Must admit, the audience in this clip were laughing at one point aswell.
Even scarier...Lang played the same music...no jesting!! I think it's just a pianola with Billy Rabbit behind the curtain riding a bike.
I don't think I should ever see Lang Lang as I may get thrown out.
Well done Mr Toad.ahhmm...Mr Lang!!

Here's a link, BTW
http://users.pipeline.com.au/~rhoughto/Not a link to the video unfortunately, but just to the character. All good fun, I say!