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ROTTERDAM, NETHERLANDS - JULY 14: Herbie Hancock performs at day three of the North Sea Jazz Festival at Ahoy on July 14, 2013 in Rotterdam, Netherlands. (Photo by Greetsia Tent/WireImage)

ROTTERDAM, NETHERLANDS - JULY 14:  Herbie Hancock performs at day three of the North Sea Jazz Festival at Ahoy on July 14, 2013 in Rotterdam, Netherlands.  (Photo by Greetsia Tent/WireImage)