best rock voices

Cornell can sing, but nothing 1000 others don't sound like, the most unique and have never been rivaled :

Maynard James Keenan,
Perry Farell,
Robert plant,
Bowie,
Beck,
David Gilmore,
Hendrix,
Dave mustaine

And of course
Peter Steele

Lots of great voices listed so far. But, if I could wake up tomorrow and sing like anyone I wished to, it would be the late, great, and under appreciated Chris Whitley. Man, if there ever was a more expressive and soulful anglo singer than Chris, I've never heard them. Rest in peace Chris.

AL COOPER..

Cornell can sing, but nothing 1000 others don't sound like

True enough, but they're imitating HIM.

Lennon, Springsteen, Orbison, Greg Allman, Stills, Jim Morrison...