Hearing them all without an audience is fascinating. Nothing to hide behind. Keith sounds great, Ronnie looks great in a hoodie. Weird to see Mick just walking around, slowly but it’s a rehearsal and he doesn’t need to go all out. Same with his voice. Save it for when it counts . Maybe one reason why Jagger’s voice still sounds incredible .You have to preserve yourself at any age, let alone 80!
I mean crowds can cover mistakes but not here. Also when mistakes happen they get retouched in filmed version . Example is satisfaction at Hyde park. Keith plays out of tune but mistake is hidden in dvd version