As part of my unit of work in teaching the traditional song Hark The Herald Angels sing - I do an analysis and response to different versions. You will have to get these versions from You Tube yourself, but I have given you the name to search with the name of the Carol. There are 4 to compare for Year 2/3 and 3/4, 6 to compare for Year 4/5 and 10 to compare in Year 5/6 and 6/7. They choose 3 elements of music to comment on for each example and then at the end are to choose their favourite performance again using elements of music in their description. This kids LOVE these activities.
This file also includes a powerpoint about the history of Silent Night in language that is easy for the children to understand.
Others like this include Hark the Herald Angels Sing