Wikiquote has a collection of quotations by or about .
10 Sources
Everett, Walter (1997). "Swallowed by a Song: Paul Simon's Crisis of Chromaticism", Understanding Rock: Essays in Musical Analysis. New York: Oxford University Press. BooksEnthsiast.com.
Middleton, Richard (1990/2002). Studying Popular Music. Philadelphia: Open University Press. BooksEnthsiast.com.
Becker, Judith (1969). "The Anatomy of a Mode", Ethnomusicology 13, no.2:267-79.