Here are the possible solutions for jazz and r b singer gray clue
Answer
Clue
Relevancy
macy
Clue
Jazz and R&B singer ___ Gray
asa
Clue
Gray of "Gray's Manual of Botany"
Gray of ''Gray's Manual''
kennyg
Clue
"For his contributions to jazz, ___ should be smeared with bacon grease, placed in a cage with three underfed Kodiak grizzly bears, and whatever happens, happens." ("Genius Guide to Jazz")
teams
Clue
Jazz and Blues, but not smooth jazz or jump blues, AFAIK
aljolson
Clue
"The Jazz Singer" singer
blossomdearie
Clue
Jazz singer and pianist who sang "Figure Eight" on "Schoolhouse Rock" (1924-2009)