Quite a touching tribute from Slowhand.
I'd occasionally see ads in the music press for John Mayall gigs in the '80s, or reviews of them and I'd think: why is he still performing at his age? Same with Alexis Korner of course, the other godfather of the British Blues. These days we think nothing of musicians performing in their 50s.
Blimey! Looks and sounds like he'll not be far behind. Tin-foiler, of course ;D ;)
RIP John Mayall