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July 29, 2016

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Willie Nelson, the country music icon who turns 81 this week, smiles as he receives his fifth-degree black belt in the martial art of Gong Kwon Yu Sul on Monday, April 28, 2014, in Austin, Texas.

Ralph Barrera / Austin American-Statesman / AP

Willie Nelson, the country music icon who turns 81 this week, smiles as he receives his fifth-degree black belt in the martial art of Gong Kwon Yu Sul on Monday, April 28, 2014, in Austin, Texas.