Frogman, a person who is very knowledgeable and enthusiastic about an activity, subject, or past time is an "aficionado". A person who puts a quarter in a jukebox, may or may not be an "aficionado".
All those guys were on jukeboxes in San Antonio, Texas in the late 50's and early 60's; that's not the hippest city in the world. I believe Rok, was around that part of Texas at that time. When people come into a club, have a drink and put a quarter in the jukebox, I don't call them aficionados. They were on jukeboxes in all major cities at that time; that's where I'm coming from, I don't mean the public that was looking at "I love Lucy".
I think we're splitting hairs in regard to the public; maybe I ran into a hipper "general public ". Not only that, but all those musicians were on somebody's TV show at that time, this certainly gave them a wider exposure than just aficionados.
Enjoy the music.