Why am I just now discovering Gregory Porter?

Driving home the other evening, I happened upon a song being played by the local jazz station here in Portland. Just heard the last minute or two of it, but it struck me with the same force that Melody Gardot struck me many years back. This is someone with IT. Anyway, the name was Gregory Porter, and if you check him out on Youtube, you'll see--hear-- what I mean. One of the finest, most soulful voices I've ever heard. Just ordered an album, and am about to order a few more. People compare him to Nat Cole, and I get it, but to me he's like a mixture of Cole, Lou Rawls, and Tony Bennett.