All four segments:

https://www.youtube.com/watch?v=GJMZUHUq7cw
 Part I
  Josef Lhevinne, Rudolph Ganz, Gordon Iles
https://www.youtube.com/watch?v=e0OBtdL5qH4
 Part II
  Benno Moiseiwitsch
https://www.youtube.com/watch?v=q6mia-DJgiQ
 Part III
  Rachmaninoff, Paderewski
https://www.youtube.com/watch?v=tI_86mNeVLo
 Part IV
  final segment

Credit for these four videos on YouTube must go to Artis Wodehouse.
I saw them and passed the links on to Robbie and MMD.  The comments
by Moiseiwitsch, Merrick and Salter are very enlightening.

Dave Krall
Hammond, Indiana