Unless you are very familiar with your subject matter, you will want to spend a significant amount of time identifying the specific topic that interests you. In fact, you may want to examine several potential topics from which to make a final choice.
In selecting your topic be sure to consider the kind of resources that you will need to use to support your thesis. For example, if you wish to examine the personal relationship between two composers, it is likely that you will need to use primary sources. Have your composers written autobiographies? Are there published collections of correspondence between the composers that you can use?
A bit of preliminary research will help you determine the viability of your research topic. Dr. Vance will, of course, assist with this issue. Below, you will find links to books in the Reference Collection that should help you.
REFERENCE PRINTED MATERIALS