Again a consensus pick would be either Robert Plant or Mick Jagger. This is my list though, so neither of them make the cut.
As this is a rock supergroup, a powerhouse vocalist is required. Technically ability is less important than being able to cope with cutting through the almighty racket that would no doubt be coming from behind them one stage. My initial choice, and the only one of my choices to actually be in a supergroup, to my knowledge, is the much missed Chris Cornell.
The late Soundgarden front-man was not only a big lunged screamer but could also provide some rhythm guitar stability when needed. If you don't think he could cut it in such exalted company, listen to "Black Hole Sun".
However, I've moved on from my original thoughts. A supergroup needs a super front-man, especially when you consider the planet sized talents already included. A great singer, obviously, but also som…