. "A detailed comparative analysis as well as a study of genres from early chanson to canzona, to monody leading gradually to 19th-century art-song and ending with the Fab Four would reveal many fascinating facts - hinted at by formidable musicologists and composers such as Ned Rorem, Professor Wilfred Mellers (his 1973 book Twilight of the Gods was the first serious book on the Beatles) and Deryck C" . . .