To be clear, I like both Elvis P & C. It's not all gold and some of the former's is risible tripe (not unlike a certain band who he inspired), but Presley's voice is amazing, not unlike Roy Orbison's. However, Mr McManus' voice is another thing altogether (he had great taste in backing musicians though).
EDIT: I feel an early EC* listening session coming on.
* Not not that one, this one...