Fluxus, a loose association of Dada-inspired avant-garde artists that developed in the early 1960s, was active in New York and Europe.
Ono visited London to meet artist and political activist Gustav Metzger's Destruction in Art Symposium in September 1966.
She was the only woman artist chosen to perform her own events and only one of two invited to speak.

Her first contact with a member of the Beatles was when she visited Paul McCartney at his home in London to obtain a Lennon–McCartney song manuscript for a book John Cage was working on, Notations.
McCartney declined to give her any of his manuscripts but suggested that Lennon might oblige.
Lennon later gave Ono the original handwritten lyrics to "The Word".

Ono and Lennon first met on November 9, 1966 at the Indica Gallery in London, where she was preparing her conceptual art exhibit, and they were introduced by gallery owner John Dunbar.
Lennon was initially unimpressed with the exhibits he saw, including a pricey bag of nails, but one piece, Ceiling Painting/Yes Painting, had a ladder with a spyglass at the top.
When he climbed the ladder, Lennon felt a little foolish, but he looked through the spyglass and saw the word "YES" which he said meant he didn't walk out, as it was positive, whereas most concept art he encountered was "anti" everything.

Lennon was also intrigued by Ono's Hammer a Nail.
Viewers hammered a nail into a wooden board, creating the art piece.
Although the exhibition had not yet opened, Lennon wanted to hammer a nail into the clean board, but Ono stopped him.
Dunbar asked her, "Don't you know who this is?
He's a millionaire!
He might buy it."
Ono supposedly had not heard of the Beatles, but relented on the condition that Lennon pay her five shillings, to which Lennon replied, "I'll give you an imaginary five shillings and hammer an imaginary nail in."

In a 2002 interview, she said, "I was very attracted to him.
It was a really strange situation."
The two began corresponding and, in September 1967, Lennon sponsored Ono's solo show at Lisson Gallery in London.
When Lennon's wife Cynthia asked for an explanation of why Ono was telephoning them at home, he told her that Ono was only trying to obtain money for her "avant-garde bullshit".

In early 1968, while the Beatles were making their visit to India, Lennon wrote the song "Julia" and included a reference to Ono: "Ocean child calls me", referring to the translation of Yoko's Japanese spelling.
In May 1968, while his wife was on holiday in Greece, Lennon invited Ono to visit.
They spent the night recording what would become the Two Virgins album, after which, he said, they "made love at dawn".
When Lennon's wife returned home, she found Ono wearing her bathrobe and drinking tea with Lennon, who simply said, "Oh, hi."

On September 24 and 25, 1968, Lennon wrote and recorded "Happiness Is a Warm Gun", which contains sexual references to Ono.
Ono became pregnant, but she suffered the miscarriage of a male child on November 21, 1968, a few weeks after Lennon's divorce from Cynthia was granted.
Fluxus, a loose association of Dada-inspired avant-garde artists that developed in the early 1960s, was active in New York and Europe. Ono visited London to meet artist and political activist Gustav Metzger's Destruction in Art Symposium in September 1966. She was the only woman artist chosen to perform her own events and only one of two invited to speak.
Her first contact with a member of the Beatles was when she visited Paul McCartney at his home in London to obtain a Lennon–McCartney song manuscript for a book John Cage was working on, Notations. McCartney declined to give her any of his manuscripts but suggested that Lennon might oblige. Lennon later gave Ono the original handwritten lyrics to "The Word".
Ono and Lennon first met on November 9, 1966 at the Indica Gallery in London, where she was preparing her conceptual art exhibit, and they were introduced by gallery owner John Dunbar. Lennon was initially unimpressed with the exhibits he saw, including a pricey bag of nails, but one piece, Ceiling Painting/Yes Painting, had a ladder with a spyglass at the top. When he climbed the ladder, Lennon felt a little foolish, but he looked through the spyglass and saw the word "YES" which he said meant he didn't walk out, as it was positive, whereas most concept art he encountered was "anti" everything.
Lennon was also intrigued by Ono's Hammer a Nail. Viewers hammered a nail into a wooden board, creating the art piece. Although the exhibition had not yet opened, Lennon wanted to hammer a nail into the clean board, but Ono stopped him. Dunbar asked her, "Don't you know who this is? He's a millionaire! He might buy it." Ono supposedly had not heard of the Beatles, but relented on the condition that Lennon pay her five shillings, to which Lennon replied, "I'll give you an imaginary five shillings and hammer an imaginary nail in."
In a 2002 interview, she said, "I was very attracted to him. It was a really strange situation." The two began corresponding and, in September 1967, Lennon sponsored Ono's solo show at Lisson Gallery in London. When Lennon's wife Cynthia asked for an explanation of why Ono was telephoning them at home, he told her that Ono was only trying to obtain money for her "avant-garde bullshit".
In early 1968, while the Beatles were making their visit to India, Lennon wrote the song "Julia" and included a reference to Ono: "Ocean child calls me", referring to the translation of Yoko's Japanese spelling. In May 1968, while his wife was on holiday in Greece, Lennon invited Ono to visit. They spent the night recording what would become the Two Virgins album, after which, he said, they "made love at dawn". When Lennon's wife returned home, she found Ono wearing her bathrobe and drinking tea with Lennon, who simply said, "Oh, hi."
On September 24 and 25, 1968, Lennon wrote and recorded "Happiness Is a Warm Gun", which contains sexual references to Ono. Ono became pregnant, but she suffered the miscarriage of a male child on November 21, 1968, a few weeks after Lennon's divorce from Cynthia was granted.
Yoko Ono