One voice I heard quite a bit of as a wee (and not yet very insolent nor even lucky) lad was Phil Harris. My folks had several of his old 78s; even my father -- whose idea of great music was the marching band at half-time -- liked Phil. Here's an early and rather silly movie appearance with him singing in the shower.
I'm sure hearing Harris in my formative years had consequences for my own singing much later! That and the other music I can remember from when I was five or six or so -- the Weavers, the Everly Brothers, Tex Ritter (my grandfather's favorite), Eddie Arnold and, especially, Burl Ives.