African and Caribbean music case study

The music essay prompt:
Consider the ways in which various musical cultures have exhibited processes of cross-cultural interaction. Select a minimum of two case studies from the reading or textbook that allow you to make an instructive analysis of these transcultural/transnational processes at work. Cite specific musical examples from textbook and readings that support your thesis.

The music essay should do the following:
1.present and develop a strong thesis(argument)
2.Cite specific musical examples or case studies from textbook and readings.
3.offer your own insights/critical responses to the question posted.

Textbook is here : http://zh.scribd.com/doc/79076577/Michael-B-Bakan-World-Music-Traditions-Transformations-Second-Edition