Y'all only mentioned the "folk stars". There are a whole lot of folks who are actively performing into their 70's and 80's, some make 90. They don't make the cover of Sing Out! or show up on Mudcat but their contributions are just as viable as the "stars".

How 'bout my friend Sam Hinton? He still plays a mean harmonica in his late eighties.

Burl Ives did his vocal excercises every morning 'til the time he left the planet.

Unfortunately, many are like Joe "King" Oliver who die in obscurity after a lustrous career.

One thing about musicians, if they take care of themselves, the music keeps them young.

Frank