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Well, you didn't mention this in your question. But now that this is clarified, my next question relates to representative selections. Are there really that many who have made this relocation? And you do not limit the diaspora selection to Ghanian diaspora artists, which i think you should, as africa is a huge continent. How will you ensure that you have a representative selection? Is there some sort of popularity index that sorts artists by sales or revenue that you could use to limit your diaspora selection. It would also be nice if this index has a ghanian equivalent. Next you need a methodology to study the artistic expression itself. You can use live concerts, or you can simply look at musical elements. Some of these may have changed because of availbility (no dancers/mucians in the same african tradition, and others may have changed for finacial reasons.) And then there is the artistic choice/preference of the artist, which you can only acertain by asking or checking interviews. These are my two cents worth. good luck.

That's an interesting question with implications across a huge variety of cultural fields. My recent PhD research was in music education and my thesis contains discussion on this topic regarding global influences on local musical culture. Here's a link to my thesis. You might enjoy reading the sections on the theme "Global Spectra". I'd be interested to hear what you think.

You might find publishing segments of your thesis in relevant journals better than publishing the thesis as a whole.

Dear Jun Wang

 please check pdf