Ay-O at Gallery Itsutsuji
From Democrato to Fluxus
Probably, the best reference to understand the early years of Ay-O is the autobiographical retrospective book in the references "Ay-O, Over the Rainbow, Ay-O Restrospective 1950-2006." In a nutshell: Ay-O started his career in the Demokrato Artist Association (デモクラート美術家協会), created by Ei-Q. This association promoted artistic freedom and independence in making art. The influence of these values with Ay-O can be seen in a series of early paintings over which he painted a large X because he thought they were not original enough. Another independent movement was close to Democrato in Japan: Sōzō Biiku (創造美育) by the collector Sadajirō Kubo (久保貞次郞） promoting nurturing freedom when teaching art. Both movements started Fukui Prefecture in Japan and explain the special bound Ay-O developed with the Fukui Prefecture. Sōzō Biiku's approach is a challenge of the traditional Japanese Master-Student relationship. As such, like naive art, the movement promotes ways independent to the culturally established ones. Kubo also created the "Small Collector Society" (小コレクターの会) to spread art collection in society.
Ay-O was introduced to George Maciunas by Yoko Ono in 1961 and formally joined Maciunas in Fluxus in 1963. Ay-O was known for his Finger Boxes and for his performance events when he was active in Fluxus. He worked closely with fellow Fluxus artists Maciunas, Emmett Williams, Dick Higgins and Nam June Paik. He lived in the same fluxus style coop as Nam June Paik in Soho at the time.
The Rainbow Artist
Ay-O established a reputation in the avant-gardes of Japan, Europe and the United States. In Japan, he is known as the "Rainbow Man" for his use of colorful, rainbow-striped motifs in his artwork. In its purest form, some paintings are simple gradations of the rainbow, with up to 192 gradations.
Ay-O represented Japan at the Venice Biennale in 1966 and at the São Paulo Biennale in 1971. He also built the famed "Tactile Rainbow" at the Osaka World's Fair in 1970. In 1971, true to his Demokato debut, he adapted 10 American Naïve paintings and created a rainbow version that he called Nashville Skyline. Ay-O's attachement to Douanier Rousseau's work is another proof of his interest for naïve art. In 1987 he did a series of Rainbow Happenings, with Rainbow Happening #17 being a 300m Rainbow Eiffel Tower project in Paris.
One of his projects in English was a Collective Portrait of George Maciuanas, that he co-edited with Emmett Williams and Ann Noel. In the recent decade Ay-O has exhibited regularly at the Emily Harvey Gallery in (1996, 2001) and Gallery Itsutsuji (1996,2005,2007,2012) and Gallery Goto (1999,2004) in Japan. In Japan Ay-O is part of the collection of the National Museum of Modern Art in Tokyo and Kyoto (see 2005 Tokyo exhibition in the links). In 2001 Ay-O had a room in the special exhibit "La fluxus Constellation" in the Museum of Contemporary Art in Genoa. He was also represented in various other Fluxus exhibitions around the world as "Centraal Fluxus Festival" Centraal Museum, Utrecht (2003), "Fluxus & Non Fluxus Fluxus" Randers kunstmuseum (2006). Ay-O was one of the "Twelve Japanese Artists from the Venice Biennale 1952-2001," in Art Tower Mito ATM, Mito. At the Mori Art Museum, Tokyo, Ay-O was part of two exhibitions: "Tokyo-Berlin / Berlin-Tokyo" in 2005 and "All about laughter" in 2007. Finally in 2012 the MUSEUM OF CONTEMPORARY ART TOKYO (MOT) showed a large retrospective exhibition: "Over the Rainbow once more."   This was followed by the retrospective being shown at the Hiroshima City Museum of Contemporary Art through to 14.1.2013.. The 300m Rainbow from Happening #17 was part of the show . Hiroshima's MOCA exhibit was the occasion of one more happening performed by Ay-O and his team : a Fluxus revival performance, succession of 30 shorts representing each a different Fluxus artists Video on YouTube. This was Ay-O's way to celebrate the 50's birthday of Fluxus, and a Japanese echo the Wiesbaden events . In 2012 the MOMA produced the an exhibit titled : Tokyo 1955-1970 Avant Garde where Ay-O's work in that period are presented.
Fukui (2006) and Japan (2012) Retrospective
Ay-O did his most complete retrospective exhibition in the Fukui Art Museum in 2006. This exhibition was the occasion for the artist to write a bilingual book "Over the Rainbow, Ay-O Restrospective 1950-2006," in which he provides an overview of his work. In 2012 similar retrospective augmented by recent works "Ay-O: Over the Rainbow Once More" is shown in various locations in Japan - the inaugural exhibit was in the Tokyo MOT.
- Mr. Fluxus: A Collective Portrait of George Maciunas 1931-1978, Thames & Hudson, 1998
- Niji: Ai O hanga zen sakuhinshu, 1954–1979, Published in English by Sobunsha
- Ouzel, Chikumasyobo Publishing, 1978
- Ay-O, Over the Rainbow, Ay-O Restrospective 1950-2006 (174 pages) (ISBN 4568103592), Bijutsu Shuppan-Sha (ja:美術出版社), 2006
- Ay-O, Ay-O over the Rainbow once more, (ISBN 978-4906702015) 2012 
- Rainbow Rainbow prints, Catalogue raisonne, Abe Shuppan, Co, 2000
- Japan Quarterly, Asahi Shinbunsha eds, 1973,v. 20 p187 and v.22-23 1975-1976 p286
- Caroline Parsons, People the Japanese Know, Japan Times eds, 127 pages (ISBN 4789004538), 1989
- Leigh Landy, Technology, Avant Garde collection (Interdisciplinary and International Series) (ISBN 9051832869), p 23, 1992
- Higgins, Hannah (2002). Fluxus experience. ISBN 978-0-520-22867-2.
- Owen Smith, Fluxus: The History of an Attitude, San Diego State University Press, 1999
- Midori Yoshimoto Into Performance: Japanese Women Artists In New York, p41 and p118 (ISBN 0813535212), Rutgers University Press, 2005
- Ay-O at the Tokyo MOT
- Rainbow Manifesto by Ay-O
- "The New Japan" by David Elliott
- Twelve Japanese Artists from the Venice Biennale 1952-2001
- Fukuoka Museum
- Fluxus: Art in Life, Urawa Art Museum
- Fluxus: From Art to the Mundane, Urawa Museum
- 2006 retrospective, Fukui museum
- Over the Rainbow Once more, MOT Tokyo (2012)
- Over the Rainbow Once more, MOCA Hiroshima (2012)
- 2012 "Tokyo 1955-1970 Avant-Garde," MOMA