The Question and Answer section for Snow Falling on Cedars is a great resource to ask questions, find answers, and discuss the novel.
Can you tell me what chapter number this is in?
I think this is more a question that you will have to think about and answer. You probably know more up to date songs than I do. This is really an opinion question. Consider the tone and voice of the story and try to think of a melody you have...
Check out the link provided below. It might have some useful suggestions for the essay you are required to write.