At the end of Scrooge's visit to the Cratchit's during Christmas Present, Tiny Tim starts singing "Silent Night" which is then taken up by others in various scenes. Originally a German-language hymn written in Austria, it was not translated into English until 1863, a full 20 years after Dickens wrote "A Christmas Carol".
There is no entry in an 1843 Register of Death that would require the signature of Ebenezer Scrooge. There is no space for a witness or next of kin and all information would have been entered by a registrar or clergyman making the opening scene factually incaccurate. In truth, Stewart, who was merely following the opening lines of the original book, was not to blame for this. The fault lies with Charles Dickens who wrote 'The register of his burial was signed by the clerk, the undertaker and the chief mourner' and this may be traced to lack of knowledge on behalf of the author who, aside from signing his own marriage register (a much more detailed pro forma) would have not have come into contact with the registers which were normally kept locked away in the parish chest.
When Scrooge is back visiting his apprenticeship Christmas party, a sideways view of the musician playing the large serpentine wind instrument shows a large black mouthpiece hovering in front of his mouth, whereas moments earlier, from the front, it was a real gray trumpet-like mouthpiece actually attached to the instrument.