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The original members were Dutch artists Simon (Seemon) Posthuma and Marijke Koger, who were discovered by photographer Karl Ferris among the hippie community on the Spanish island of Ibiza in 1966. He took photographs of clothes they designed, and sent them to London where they were published in The Times. Ferris took The Fool back to London, and together they opened a studio, with the Dutch artists producing clothes and art, and Ferris pursuing photography. Barry Finch and artist Josje Leeger joined later.
Their work includes:
The Fool's best known artworks are those they created for the Beatles in 1966–67. They include:
After moving to Los Angeles, the Fool created the largest mural in the world at the time (1968) on the exterior of the Aquarius Theatre for a production of the Broadway musical Hair, by invitation of producer Michael Butler. Simon and Marijke went on to paint other theaters where Hair was playing, in San Francisco, Seattle and Chicago. Thereafter, The Fool split up, Simon, Barry and Yosha eventually going back to Amsterdam while Marijke remained in Los Angeles to continue her artistic endeavors.
As Seemon & Marijke they released another album called Son of America on A & M records, also produced by Graham Nash, in collaboration with Booker T. Jones, in 1969.
Seemon & Marijke recorded a third album called Mediterranean Blues produced by Booker T. Jones in his Homegrown Studio in 1972. Their second single "I saw you" was a hit in the Netherlands.