There's a richness and mellowness in his voice that I like. He was capable of turning on a harsher edge if the words needed it. His diction was excellent and, for me, overrode a slight sensation of affectation. Sort of agreeing with Jim, I hear that waver that sometimes sounds inauthentic. It's interesting to hear that it was something he worked on. When I want to do the audiological version of visualising his voice (is there such a word as audiolising?), as I do now, I think of songs like My Old Man and Joy Of Living.