[21twelve]

Jim Morrison is an interesting choice. I like his style, but not sure if he is the best singer. But - the question was “vocalist” so I think he fits. Innovative, passionate, etc.

“You gotta beep a gunk a chucha
Honk konk konk
You gotta each you puna
Each ya bop a luba
Each yall bump a kechonk
Ease sum konk
Ya, ride”

My other favorites are:

Geddy Lee (Rush)

Jon Anderson (YES)

Jon was singing at their Rock and Roll Hall of Fame induction last month - at 70 years old he still sounds great.

[dfwgator]

I couldn’t listen to Geddy before “Hemispheres”, he sounded much better when he started singing like a normal person.

[HandyDandy]

“You gotta beep a gunk a chucha Honk konk konk You gotta each you puna Each ya bop a luba Each yall bump a kechonk Ease sum konk Ya, ride"

I have stated, on more than one occasion, that that is the greatest line in rock 'n roll.