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Yoko Ono, widow of former Beatle John Lennon, is shown during her concert at West Berlins Metropol-Hall, Monday, March 3, 1986, Berlin, Germany. The 53-year-old singer appears in five German cities during her 10-week world concert tour which is called World Peace instead of Star Wars. (AP Photo/Andreas Schoelzel)

Yoko Ono is shown during an interview with AP reporter Kathryn Tolbert at a Tokyo Hotel, Wednesday, August 14, 1974, Tokyo, Japan. (AP Photo/Tom Sande)

Yoko Ono poses after receiving the honorary title of Doctor of Law by the University of Liverpool, northern England, during a ceremony at the city's Philharmonic Hall Monday, July 2, 2001. The degree recognizes her artistic work and her patronage of the John Lennon Memorial Scholarship Fund, which she founded in 1991 and is now offered to students at the university. (AP Photo/PA Phil Noble, POOL)

Artist Yoko Ono addresses members of the media during a news conference on the campus of the Massachusetts Institute of Technology, in Cambridge, Mass., Friday, Oct. 19, 2001, held as part of an introduction to Ono's first American retrospective exhibit. The show, called "YES YOKO ONO," at MIT features about 150 works, including film, video, poetry, and music, from the 1960s to the present. (AP Photo/Steven Senne)

Artist Yoko Ono speaks at a news conference regarding her show "Yes Yoko Ono" at the San Francisco Museum of Modern Art, Friday, June 21, 2002, in San Francisco. The show is the first American retrospective of Ono's work and will be open to the public June 22 and run until Sept. 8. (AP Photo/Justin Sullivan)

John Lennon and Yoko Ono perform on stage in an undated file photo. (AP Photo)

Artist Yoko Ono poses next to one of her works 'War is over! If you want it - Love and Peace from John an Yoko' in the museum of arts (Kunsthalle) in Bremen, northern Germany, on Tuesday, June 12, 2007. The widow of John Lennon shows her 'Instructions for Paintings' works at the museum until Aug. 5, 2007.(AP Photo/Joerg Sarbach)

Japanese artist Yoko Ono is seen at a news conference at the Contemporary Art Center in Warsaw, Poland, Wednesday, Sept. 17, 2008 where she presented a selection of her works of art. (AP Photo/Czarek Sokolowski)

In this1968 file photo member of British pop band The Beatles John Lennon poses with his son Julian, sitting on his lap, and Yoko Ono at an unknown location in 1968. The woman who as a child was the basis for the Beatles song "Lucy in the Sky with Diamonds" is gravely ill. It was thought by many at the time that the psychedelic song from Sgt. Pepper's Lonely Heart Club Band was a paean to LSD because of the initials in the title, but it was actually based on a drawing that John Lennon's young son Julian brought home from school. He told his father the drawing was of Lucy in the sky with diamonds. Lucy Vodden, living in Surrey just outside of London _ drifted apart after schoolyard days, but they have gotten back in touch as Lennon has tried to help Vodden cope with Lupus, a life-threatening disease. (AP Photo)

Beatles John Lennon, center, and Paul McCartney, arrive at the London Pavillion cinema on July 17, 1968 for the premiere of their new animation film "Yellow Submarine." At left is Japanese film producer Yoko Ono. (AP Photo)

Beatle John Lennon, right, and companion Yoko Ono are arrested for possession of marijuana after their flat was raided in London, England, on Oct. 18, 1968. (AP Photo/Boyton)

John Lennon, one of the Beatles, and his Japanese girl friend, Yoko Ono, leave car to enter Marylebone court in London on Oct. 19, 1968. They appeared on charges of possessing cannabis, the British name for hashish. The trial was set for late November after the police asked for time to have the seized drugs analyzed. (AP Photo)

John Lennon, right, is seen with his wife Yoko Ono at a press conference in 1969. (AP Photo)

Beatle John Lennon, right, and Yoko Ono are shown circa 1969 at an unknown location. (AP Photo)

Beatle John Lennon, left, and his friend Japanese actress Yoko Ono go through the editing of the film "Rape" together with an editor, partly obscured by the viewer Reel, in London, England, on Feb. 5, 1969. (AP Photo)

Beatle John Lennon waves his marriage certificate as his bride, Japanese artist Yoko Ono, stands at his side after their wedding at the Rock of Gibraltar on March 20, 1969. They are about to board a chartered jet to Paris where they will honeymoon. (AP Photo)

Beatle John Lennon and his wife, Yoko Ono, hold a bed-in for peace in room 902, the presidential suite at the Hilton Hotel in Amsterdam on March 25, 1969. The newlyweds, holding solitary tulips, begin a seven-day Love-In to protest the Vietnam War. (AP Photo)

John Lennon and his wife Yoko Ono perform in their first public appearance as the Plastic Ono Band, at Toronto's Varsity Stadium, Sept. 14, 1969. (AP Photo)

John Lennon and his wife Yoko Ono display a letter from Lennon to British Prime Minister Harold Wilson at the Beatles' Apple Records headquarters, Nov. 25, 1969. The letter explains his reasons for returning his Order of the British Empire medal, including British support for the U.S.A.'s war in Vietnam and British involvement in Biafra and Nigeria. (AP Photo)

John Lennon, right, and his wife, Yoko Ono, take their first ride on a snowmobile on a farm owned by rock singer Ronnie Hawkins at Mississauga, Ontario, Canada, Dec. 18, 1969. Lennon and Ono are staying on the farm during their peace crusade in Canada. (AP Photo)

Beatle John Lennon and his wife, Yoko Ono, pose in short hair at their farmhouse retreat in North Jutland, Denmark, Jan. 23, 1970. (AP Photo)

An Eskimo kiss (rubbing noses) is enjoyed by Beatle John Lennon and his Japanese wife Yoko Ono, during an interview held in London on Feb. 9. 1970. Last month both had their hair cut short at Aalborg, Denmark. Hair will be auctioned later in London and proceeds will go to Black Power, an organization interested in the leisure and welfare of colored people in Britain. (AP Photo)

John Lennon and his wife Yoko Ono are seen at the Cannes Film Festival, May 18, 1971. Lennon carries Ono's art book "Grapefruit" in his jacket. (AP Photo/Michel Lipchitz)

John Lennon and his wife Yoko Ono raise their fists as they join a protest in front of British Overseas Airways Corp. offices in New York in this Feb. 5, 1972, file photo. The demonstrators called for the withdrawal of British troops from Northern Ireland.The FBI has released its final surveillance documents on Lennon to a university historian who has waged a 25-year legal battle to obtain the secret files. The 10 pages contain new details about Lennon's ties to leftist and anti-war groups in London in the early 1970s, but nothing indicating government officials considered the former Beatle a serious threat, historian Jon Wiener told the Los Angeles Times in Wednesday's editions,Dec. 20, 2006. (AP Photo/Ron Frehm, file)

In this photo released by Geffen Records is the front cover of the album "Double Fantasy" released by John Lennon and featuring his wife Yoko Ono, shown Dec. 9, 1980. (AP Photo/Geffen Records/Kishin Shinoyama)

Former Beatle John Lennon, left, and his wife Yoko Ono, leave the Immigration and Naturalization Service, at 20 West Broadway, March 16, 1972, New York. His case was postponed and comes up in April (AP Photo/Anthony Camerano)

In this file photo dated April 18, 1972, John Lennon, right, and Yoko Ono, left, are seen outside the U.S. Immigration offices in New York City, USA. Vatican media praised the Beatles' musical legacy on Saturday, Nov. 22, 2008. John Lennon's boast that the British band was more popular than Jesus outraged many when he made it in 1966, Vatican newspaper L'Osservatore Romano noted, but that the remark can be written off now as the bragging of a young man wrestling with unexpected success. (AP Photo, File)

In this March 16, 1972 file photo, John Lennon and Yoko Ono leave a brief deportation hearing in New York at the offices of the Department of Immigration and Naturalization. Yoko Ono is planning a series of events in Iceland to mark what would have been John Lennon's 70th birthday. The artist and peace campaigner will light the Imagine Peace Tower illuminated memorial, located on the island of Vioey near Icelandic capital Reykjavik, on Oct. 9, 2010. (AP Photo/Tony Camerano, File)

John Lennon and his wife, Yoko Ono, arrive at The Hit Factory, a recording studio in New York City on Aug. 22, 1980. (AP Photo/Steve Sands)

Yoko Ono, widow of the late John Lennon, left, with her eight-year old son Sean outside Lennons childhood home at 251 Menlove Avenue, when the two made an emotional tour of the ex-Beatles home town, Tuesday, Jan. 24, 1984, Liverpool, England. (AP Photo/Mercury)

Sean Lennon and his mother Yoko Ono are seen at the dedication of Strawberry Fields in memory of John Lennon, Oct. 9, 1985, in Central Park in New York. (AP Photo/G. Paul Burnett)

Yoko Ono, widow of John Lennon, reacts during ceremonies in New Yorks Central Park, dedicating a portion of the park as Strawberry Fields after the title of one of the ex-Beatles songs, Wednesday, March 21, 1984, New York. (AP Photo/Rene Perez)

Yoko Ono, widow of former Beatle John Lennon is performing on the stage of the VUB (Free Brussels University) in Brussels on Friday, March 1, 1986. She started her European tour in Brussels with future stops in Holland, Poland, West Germany, Ireland and England. (AP Photo/Loyaard)

Yoko Ono, widow of former Beatles John Lennon, performs in Warsaw, Poland in evening on Tuesday, March 5, 1986 as part of her European tour. (AP Photo)

Yoko One performs on the stage at Giant Stadium, during the Amnesty International concert on Sunday, June 15, 1986 at East Rutherford, N.J. One was one of over 25 performers that took part in the all day rock affair. (AP Photo/Tom Costello)

Yoko Ono performs on the stage at Giant Stadium, during the Amnesty International concert on Sunday, June 15, 1986. One was one of over 25 performers that took in the all day rock affair. (AP Photo/Tom Costello)

Yoko Ono, second from left, widow of John Lennon, signals her hopes for world peace in celebration of "Harmonic Convergence" along with her two nieces and a nephew, from the top of Mount Fuji, Japan, on Monday, August 17, 1987. Hiking overnight to the summit, Ms. Ono joined 25 other participants in witnessing the sunrise, the peak of the global celebration. (AP Photo/David Nelson)

Yoko Ono, widow of John Lennon, and their son, Sean, 10, are shown in London, England, March 20, 1986. Ono will perform in concert at the Wembley Conference Center on her Starpeace Tour, taking in 33 cities in seven weeks. (AP Photo/Richard Price)

Yoko Ono, widow of John Lennon poses with one of his works entitled "Bag One" at the opening of a show of previously unreleased Lennon art at a Chicago art gallery on Friday, Feb. 26, 1988 in Chicago. The collection includes bronze sculpture, stone lithographs, serigraphs, tapestries, and kinetic neon sculpture. (AP Photo/Mark Elias)

Yoko Ono, wife of late Beatle John Lennon, poses in front of a star honoring Lennon after it is unveiled on the Hollywood Walk of Fame in Los Angeles, Ca., on Sept. 30, 1988. (AP Photo/Alan Greth)

Yoko Ono arrives for the New York Restoration Project opening ceremony of the Peter Jay Sharp Boathouse on the Harlem River and the opening of Swindler Cove Park Thursday, June 17, 2004, in New York. (AP Photo/Tina Fineberg)

Artist Yoko Ono, poses during a performance at the Portikus exhibition hall in Frankfurt, western Germany, on Tuesday, May 31, 2005 where she presented her "Dream Universe" exhibition which is a project in collaboration with students from the Staedel Art School in Frankfurt until June 26, 2005. (AP Photo/Bernd Kammerer)

Yoko Ono celebrates during the curtain call for 'Lennon,' a new Broadway musical about the life of her husband John Lennon, Sunday, Aug. 14, 2005, in New York. (AP Photo/Diane Bondareff)

Yoko Ono performs at the SXSW Music Festival early Sunday, March 20, 2011.(AP Photo/Jack Plunkett)

Former Beatle John Lennon's wife Yoko Ono, right, performs during "One To One", a charity concert to benefit mentally challenged children, at New York's Madison Square Garden, Aug. 30, 1972. Lennon plays guitar at far left. (AP Photo/Dave Pickoff)

Yoko Ono accepted a cultural award for her late husband, John Lennon, from Mayor Ed Koch in New York on Friday, May 22, 1981 and said the city "was our town and still is." (AP Photo)

Yoko Ono is shown in this 1990 photo. (AP Photo)

Yoko Ono and Sean Lennon, widow and a son of John Lennon, tell the audience about John's life after the opening number "Power to the People" during the "Greening of the World" concert held in evening on Friday, Dec. 21, 1990 at the Tokyo Dome to celebrate the 50th birthday of John Lennon. (AP Photo/Tsugufumi Matsumoto)

Yoko Ono poses with her son Sean Lennon at the Hyde Park Hotel in London, May 22, 1996. (AP Photo/John Stillwell)

Yoko Ono, widow of John Lennon, during her performance in the music hall "Loft" in Berlin Monday night, June 3, 1996. The Berlin concert was the start of her tour through Germany. (AP Photo/Hans Edinger)

Radical songstress Yoko Ono sings in New York's Central Park Saturday, July 6, 1996. Yoko performed with her son Sean Lennon and his band IMA. (AP Photo/Chris Maynard)

Yoko Ono, avant-garde artist and wife of late pop star John Lennon, finishes her statements during a press conference at the Israeli Museum in Jerusalem Friday Nov. 26 1999. Ono is in Israel for the opening of her exhibits in Jerusalem and in the northern town of Um al-Fahm (AP Photo/Ruth Fremson)

Yoko Ono, during a visit to Amnesty International's London headquarters, in this Sept. 24, 2007, file photo. Ono, the world's most famous unknown artist, as her late husband John Lennon called her, will open an exhibition with about 80 of her artwork in South America's largest city this weekend. The exhibition, called "Yoko Ono, a Retrospective," begins Saturday, Nov. 10, 2007, and will stay in Sao Paulo until Feb. 3. (AP Photo/Kirsty Wigglesworth)

Yoko Ono, left, and her son Sean Lennon visit a fracking site in Franklin Forks, Pa., Thursday, Jan. 17, 2013. They are on a bus tour of natural-gas drilling sites in northeastern Pennsylvania and plan to visit with residents who say they've been harmed by the controversial extraction process known as fracking.(AP Photo/Richard Drew)