What are some of the best soul jazz music or artists?

anything by sade...
ray charles did some soulful jazz in his career...
aaron neville's cd 'nature boy'...
randy crawford (i would sugest her 'best of' collection)...
george benson...
etta james (especially the cds 'blue gardenia' and 'lady day: tribute to billie holliday')...

Ella Fitzgerald (It Don't Mean a Thing, Mack the Knife)
Duke Ellington (Take the A Train)
Natalie Cole (I'm Calling You, Its Crazy but I'm in Love)
Louis Armstrong
Diana Krall
Marion Meadows
Sade
Incognito
Maysa Leak

Diana Krall
Ella Fitzgerald
Billy Holiday
Sarah Vaughn (imo anyway)
John Coltrane
Miles Davis
Chris Botti

Hank Crawford great soulful alto sax master has many fine cds. Cannonball Adderley Mercy Mercy Mercy and Work Song and many more classics. A new soulful cd by Brian Bromberg covers classics like Cantaloupe Island and Mercy Mercy Mercy. Houston Person the great soulful tenor sax man and of course King Curtis. Check out King Curtis cd Live at Fillmore West and Sugar by the great tenor sax man Stanley Turrentine puts it where it is .The cd by Rick Braun and Richard Elliott R&R reeks with soul.