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Fans gather at the Imagine mosaic plaque in the Strawberry Fields section of Central Park, in New York, an area dedicated to the memory of John Lennon on October 9, 2015. New York joins several cities worldwide hosting events on Friday to commemorate what would have been John Lennons 75th birthday. AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

Fans gather at the Imagine mosaic plaque in the Strawberry Fields section of Central Park, in New York, an area dedicated to the memory of John Lennon on October 9, 2015.  New York joins several cities worldwide hosting events on Friday to commemorate what would have been John Lennons 75th birthday. AFP PHOTO / TIMOTHY A. CLARY        (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)