Watch the evolution of Terrance Osborne's painting for the 2010 Congo Square Poster below.

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Terrance Osborne works from dark to light. “I think of bringing sunlight into the image,” he says.

Osborne was commissioned to paint the 2010 Congo Square poster for Jazz Fest, a portrait of “Uncle” Lionel Batiste, bass drummer for the Treme Brass Band. His artistic process is one of gradual illumination. He starts by sketching the f...