I came across this book in my search for a dissertation topic, and have not been disappointed. It examines how global performers deal with the issue of language and dialect choice. I was most intrigued by “Anthony McCann”‘s article on the heirarchy of tradition in Irish- and English-language song in Ireland, and am considering a similar approach to the analysis of language choice in Hawai’i’s musical traditions.
Global Pop, Local Language also includes an interesting article by C. K. Szego on Hawaiian language performances at Kamehameha School. I highly recommend the book.