Photo Coverage: Yoko Ono performs in Reykjavik

Sean Lennon, son of former Beatles lead singer John Lennon, blows out candles on a birthday cake at a memorial concert in Reykjavik October 9, 2010. The event was held in conjunction with what would have been the 70th birthday of John Lennon, who was shot and killed outside his residence at the Dakota building in New York on December 8, 1980.

Sean Lennon, son of former Beatles lead singer John Lennon, blows out candles on a birthday cake as his mother Yoko Ono watches at a memorial concert in Reykjavik October 9, 2010. The event was held in conjunction with what would have been the 70th birthday of John Lennon, who was shot and killed outside his residence at the Dakota building in New York on December 8, 1980. IMAGES OF THE DAY

Yoko Ono, widow of Beatles lead singer John Lennon, performs in Reykjavik October 9, 2010. Saturday would have marked Lennon's 70th birthday.

Former Beatles drummer Ringo Starr L and Yoko Ono, widow of Beatles lead singer John Lennon, sing Give Peace a Chance in Reykjavik October 9, 2010. The Imagine Peace Tower was re-lit on Saturday to mark what would have been the 70th birthday of Lennon, who was shot and killed outside his residence at the Dakota building in New York on December 8, 1980. The Imagine Peace Tower consists of searchlights reflected upward high into the sky, and located near Reykjavik in Iceland. SOCIETY

People stand around the Imagine Peace Tower as it is turned on, on Videy Island in Kollafjordur Bay near Reykjavik October 9, 2010. The Imagine Peace Tower, a memorial to Beatles lead singer John Lennon from his widow Yoko Ono, consists of a tall tower of light projected from a white stone monument bearing the words Imagine Peace carved into it in 24 languages. Lennon, who was shot and killed outside his residence at the Dakota building in New York on December 8, 1980, would have turned 70 years old on October 9, 2010 . REUTERS/Ingolfur Juliusson SOCIETY IMAGES OF THE DAY