John Hardly, here are the hyperlinks to the artists you posted:

http://www.youtube.com/watch?v=fmjULeODgqc Donnie Hathaway
Donnie Hathaway

**

http://www.youtube.com/watch?v=t7t_AD
Mavis Staples

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http://www.youtube.com/watch?v=KX8fZ-lWhFA
Gladys Knight

**

http://www.youtube.com/watch?v=KwfrvNNoIGU&feature=related
Brook Benton

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http://www.youtube.com/watch?v=my36wsyfH-0&feature=related
David Ruffin

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http://www.youtube.com/watch?v=rD4O0KBCPHw
Stevie Wonder

**

http://www.youtube.com/watch?v=hAO7XFjXzYo
Tower Of Power

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http://www.youtube.com/watch?v=3ew3BtOb_u8
Veronica Nunn

**

http://www.youtube.com/watch?v=7oJ8ZuvVSwA
Marvin Gaye

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http://www.youtube.com/watch?v=OCbdpG1WJYA
Major Harris

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http://www.youtube.com/watch?v=3Q3a1rH_fAI
Ray Charles

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http://www.youtube.com/watch?v=sEke7QrtVLs&feature=related
Johnny Hartman


I haven't tested these links to see if they work. Hopefully, they will, 'cause I'm feeling like it's Christmas and I have some good musical treats to look forward to seeing & hearing.