Freddie Mercury
Roy Orbison
Jon Anderson
Linda Ronstadt
Paul McCartney
Honorable mention-
Robert Plant for the first 4 Zep albums (his voice severely deteriorated after 1971)
Ian Gillan
Roy Orbison
Jon Anderson
Linda Ronstadt
Paul McCartney
Honorable mention-
Robert Plant for the first 4 Zep albums (his voice severely deteriorated after 1971)
Ian Gillan