My favorite male vocalists are

1 Sam Cooke

2 Otis Redding

3 Ben E. King

4 Percy Sledge

5 Jackie Wilson

6 Soloman Buke

7 Al Green

8 Marvin Gaye

9 Isaac Hayes

10 Barry White

11 Peabo Bryson

12 Teddy Pendergrass

13 Luther Vandross

14 Freddie Jackson

15 Christopher Williams

16 Kenny Lattimore