Just sitting here listening to a little Fleetwood Mac and thinking that I'd know Stevie Nicks' voice anywhere. There are some voices like that- you recognize them right off the bat because they're so unique.
A few more that come to mind: Freddie Mercury, Barbara Streisand, Britney Spears, (much as I dislike her voice), Steve Perry, (until you hear his replacement for Journey, which sounds just like him!), Celine Dion, Elvis, (of course- and I can't stand his voice!)...
Ok, this list was way long longer in my head when I started this post and now I'm drawing a blank. You know what I mean, though. The kind of voice you hear in a new song and you don't have to ask who the artist is.
I'm probably un-American to admit to not liking Elvis. I do like Frank Sinatra, though, so that counts for something. (Sending pleas for forgiveness heavenward to my grandfather who thought Sinatra was a not-talent hack. We're not Italian, though, we're Scots. Maybe that's the difference. Had my grandfather been Italian, it would have been in the blood. I mean, can you be Italian and not like Frank Sinatra? I should think that would be morally reprehensible or something. Somehow defiling a natural law of the universe).