a Dancer at Fezziwig's Vi Kaley as Old Lady sitting by stove at the Charity Hospital Production Teresa Derrington, who played Fred's maid and gives Scrooge quiet encouragement to see Fred, said Alastair Sim was not as encouraging to her during filming, and asked her sneeringly if it was her first film role. Music Richard Addinsell wrote several pieces for the film's underscore, ranging from dark and moody to light and joyous. One of the more notable tunes is a polka, used in the two different versions of Fred's dinner party: the one Scrooge observes while with the Ghost of Christmas Present, and the other with Scrooge attending the party after atoning for his past coldness to Fred and his wife. The tune is similar to a traditional Slovenian polka called "Stoparjeva" ("hitch-hiker") or just "Stopar". The film also contains excerpts from some traditional Christmas carols and other tunes. "Hark! The Herald Angels Sing" is sung over part of the opening credits, and by the miners when Scrooge is with the Ghost of Christmas Present. An instrumental version of "I Saw Three Ships" is played when Scrooge gives a coin to Mrs. Dilber, and again just before the end of the film. "Silent Night" is played and sung at various times, including over the last part of the final scene and "The End". The English country dance "Sir Roger de Coverley" is played and danced during the scene where Scrooge visits the office of Old Fezziwig with The Ghost of Christmas Past. The tragic folk song "Barbara Allen" is played as an instrumental when young Scrooge is talking with his sister Fan, and sung by a duet at Fred's Christmas party. Scrooge turns up in the middle of the line "Young man, I think you're dying", thereby causing the singers to stop before the last two words. Comparison with the source material In the film, Mrs. Dilber is the name of the charwoman, whereas in the book the woman was unnamed and the laundress was named Mrs. Dilber. The charwoman's role is greatly expanded in the film, to the point that she receives second billing in the list of characters. The film also expands on the story by detailing Scrooge's rise as a prominent businessman. He was corrupted by a greedy new mentor, Mr. Jorkin (played by Jack Warner, a familiar British actor at the time) who lured him away