He is 57 years old.
And Friday evening was the first time he ever played that musically-hallowed place.
It's never too late! Which resonated with me as I head further into my semi-retirement, or more to the point, my Third Career.
Here's a video of Mac performing an Allman Brothers song, Little Matha, that he did on stage at the Opry. It was even more impressive in person- and Mac got a standing ovation.
Way to go.
Enjoy the video.