I can't talk about one Chicago born artist without talking about another!
Donny Hathaway's version of "What's Goin On" is on repeat here in the studio right now. His voice just tells us how he feels. As a child I grew up to his voice on the radio, especially during the holidays....if you know anything about the holidays then you know about his "This Christmas" song. It's a classic.
He was a rare one, with a truly timeless voice.