Van Morrison is not handsome. His voice is not of a particularly pleasant timbre. He refuses to project a phony aura of likeablility, and is likely incapable of projecting a real one. He’s strange and prickly and inscrutable. It’s likely that all of the members of the band he’s playing with are more musically cultivated than he is. Some might be better singers. Hell, the audience probably has dozens of people with more musical chops than he has. He only brings one unusual thing to the table. No one knows what that one thing is; they only recognize it when they encounter it.