Most times I’ve been there has been a pianist in the lobby at the Grand Floridian. Of course, he’s not there all day so maybe people only catch it when he’s on break? Not sure.
I’ve also seen a really nice gentleman (think he’s a well known and longtime CM) walking around the lobby main lobby at Poly and even around Capt Cook’s playing the ukulele and singing acapella and interacting with folks. Only caught him once though so I don’t know how often he’s around, but it was incredibly charming and made my whole day.