Ill-digested principles are, if anything, worse than ill-digested food, for the latter harms the body and there is cure for it, whereas the former ruins the soul and there is no cure for it.
Melody has a certain way that it projects back to you. It triggers certain nerves in your body and certain instincts that normally wouldn't be triggered by a normal voice.
I am not so foolish as to declaim against forms. Forms are as essential as bodies; but to exalt particular forms, to adhere to oneform a moment after it is outgrown, is unreasonable, and it is alien to the spirit of Christ.