SIR, It seems naïve of Dom Gregory Murray to suppose that two of his .questions can be answered with "a plain yes or no.' I do not propose to fall into that trap, but I will deal with them when he has published his apologia.
With regard to his third question, I should be surprised to learn that any author of any text-book (of the kind he defines) has ever heard of Dom Mocquereau or his "basic theory of rhythm.' Such references as there may be in these text-books are of the most general kind. and are usually concerned with the modes.
To argue from the omission of what is not known that Dom Mocquereau's theory is "freakish" seems to he like something out of Alice in Wonderland!
R. A.