Tough as it is I'll give you only four..

"What's Goin' On?" - Donny Hathawy "Donny Hathaway Live"

"I Know you Got Soul" - Bobby Byrd, James Brown, the JB's.

"Just Ask The Lonely" - The FourTops.

"People Get Ready" - Curtis Mayfield.

That's it, that's all I can say.

Honorable Mentions.

"These Eyes" - Guess Who.
"What Does It Take" - Junior Walker and the All Stars.
"My Girl" - Tempts.
"I Want You Back" - Jackson 5.
"Tangled Up in Blue" - Dylan
"Nowhere Man" - Da Beatles
"All Along the Watchtower" - Hendrix