RJA #3b: Narrowing Research Topic

After doing a bit more research, it seems like I chose a good topic to get a great research paper written. I fear if I narrow the research, say to only the effects of Classical Music on brain development, i won't be able to find enough information for the length of the paper. However, if I am writing the paper or the outline and it looks like I just have way too much information and it's going to be a little too lengthy, i will narrow it down to the topic I found the most research on and go from there.