 The scene in which Peter Mitchell tells his music class an anecdote about meeting Pablo Casals is adapted from an anecdote found in "Cellist", the autobiography of cellist Gregor Piatigorsky; the circumstances of the encounter and the pieces played are changed in the film, but Casals's words are essentially identical to those recounted by Piatigorsky.The subway poetry the Little Girl reads from when Juliette visits Peter is from Ogden Nash's poem "Old Men".T.