More important than the instrument is the musician playing it. When any new musician comes along on any instrument, and he's good enough to be compared to all the greats before him, he's good.
While I heard of "Gregory Porter", since male vocalist wasn't a niche in my collection that I was trying to fill, I didn't pay much attention; and besides, how could somebody who dressed like that sing? What possessed him to wear that hat, it was a mistake; I just knew that the next time I saw him, he would have corrected it.
Well, the next time I saw him, he still had on that goofy looking hat. Hat or no hat, it's time to listen and hear whether or not he can sing. This guy can sing, when I compare him to all the great male vocalists that went before him, he compares to the best.
https://www.youtube.com/watch?v=lFsChbwsbmoI like this, but no matter what he sings, he sounds good; you can hear his mastery of music, and know that he has a lot of formal education.