Or BB KingLook what happens when you perform past the date - Johnny Winter for one.
Donald 'Duck Dunn (Booker T & the MGs), and Mitch Mitchell come to mindLots of senior citizens on tour and have died on tour (unfortunatly)
That's what he gets for not signing a pre-nup with his x-wife (I know that may be inaccurate but hey...)We can add Paul McCartney to the list as well. He lost his vocals a number of years ago. Anything beyond a 1/2 note is just about impossible for him to carry.