[ Ref. Marilyn Monroe in "The Prince and the Showgirl",
 [ piano music at http://www.youtube.com/watch?v=ZOkv4jV1-Bo 

Isn't this the same tune that Marilyn sings later in the film?  Play
the YouTube clip.  "I Found A Dream" was written for the film, music
by Richard Addinsell, lyrics by Christopher Hassall.

Harry Arends

 [ Compare the 'barrel piano' tune in "My Week with Marilyn" at
 [   http://www.youtube.com/watch?v=o0a7TCVX9u0 
 [ with "I Found a Dream" (sung by Michelle Williams) at
 [   http://www.youtube.com/watch?v=KS6TmZqHh7s 
 [ -- Robbie