Paul is still a competent singer and i recorded TLAWR and to be fair after listening to it again its pretty good. The best vocalists in the world would struggle to put in a perfect performance for an hours and a half never mind three hours and thats in their prime. On top of that macca is playing an array of instruments and is singing on every song. The greatest vocalist in my view was Freddie Mercury but even he had a 20 minute break when Brian May did his thing! McCartney unlike others is more than just a vocalist. He is a musician of the very highest calibre and a national treasure! Long may he remain so and I don't expect him to retire for a while yet. He seems to be having too much fun!