Freddie Mercury wins hands down. His range was incredible. He could sing anything from Country, to Rock, to Opera.
Elvis of course (I'm going to Graceland next weekend)
Steve Perry (Journey)
Ann Wilson (Heart)
Meatloaf (Meatloaf)
Brad Delp (Boston)
In a recent radio poll.
Robert Plant tops Greatest Rock Voice poll
I personally don't agree with the poll results.