Yeah - they sure can still "bring it on" - nice ....   love 'em both - great performers with great songs, even in the autumn of their years they ain't gonna stop playing/singing -  it is what they do - and good for them!  ^5s !    That's what live, even studio recorded, performance does for you - once started and lose the initial stage-fright/inhibitions etc - you just can't stop... and yes - and it was a nice fiddle fill-in..., and nice find, ty @Georganne