Describe this in my own words?  No way!  I'll quote a bit of a blog
article about it, though:

  Meet Stanley, an interactive player piano.  Tweet a request
  to @StanleyPiano and the song will queue up for performance.
  Online, you can watch Stanley play the songs at his (its?)
  live debut at the Capitol Hill Block Party, a music festival
  that kicks off Friday, July 20 in Seattle, Wash.  The account
  will tweet at you when your song is up next.

http://mashable.com/2012/07/18/stanley-player-piano/ 

If you surf over to Stanley's web site you can see and hear it yourself
(along with far too much room noise, alas), through the magic of live
A/V streaming:  http://stanleypiano.com/ 

Unfortunately, Stanley has a painfully short attention span, and often
trails off after playing only a few bars, or at most a theme or two.
I guess that makes it a perfect installation piece for the Twitter
generation...

Colin Hinz

 [ "Stanley" reminds me of "Irma, The Magic Piano", who entertains
 [ at the Magic Castle in Hollywood.  -- Robbie