Ok, here goes... I'm going to limit to 4 each otherwise I'll be here all day
Lead:
David Gilmour
Frank Zappa
Dimebag Darrell
Steve Stevens
Rhythm:
Bill Kelliher
Mark Hosking
Ed O'Brien
John Baizley
Bass: Billy Gould
Justin Chancellor
Robert DeLeo
Colin Greenwood
Vocals:
Thom Yorke
Kimbra
Jeff Buckley
David Bowie
And if we're including vocalists, why not drummers??
Drums:
Brann Dailor
Danny Carey
Dave Grohl
Steve Judd
This list is subject to hourly change.