best rock voices

I'd have to say....Paul Rodgers singing "All Right Now" while he was with Free may be the all time greatest recorded rock vocal, IMHO, of course.

My personal favorites are Bono, Bon Scott, John Mellencamp, Patty Smith, John Lennon, Bradley Nowell...

Lou Gramm of Foreignor- Great male vocalist
Jennifer Charles - Elysian Fields

John Lennon. Also dig Steve Marriott (Humble Pie).

For me, its a tie: Paul McCartney Jim Morrison, for the male singers.

Honorary mentions include: Eric Burden, Robert Plant & Roger Daltry

For the females singer, also a tie: Grace Slick & Janis Joplin

Honorary Mentions: Mama Cass, Jonatha Brooke

That guy that used to sing with Black Oak Arkansas. :-)