This catalogue is published on the occasion of the exhibition Horizontal Memories held at Astrup Fearnley Museet, Oslo in 2005. With introduction by Gunnar B. Kvaran, essays by Nicolas Bourriaud, Hanne Beate Ueland, Kjell Runar Jenssen and Grete Arbu, artist interview by Hans Ulrich Obrist and artist biography.

'In the course of time she has been associated with Conceptual Art, performances, Fluxus and happenings, but above all she has been an independent artist, a pioneer, who has decisively questioned the concept of art and the art object and has broken down the traditional boundaries between the various branches of art. Through her work she has created a different kind of relationship with the spectators, inviting them to play an active part in the making and creative process of the art work. In Yoko Ono's art, two cultural worlds meet - the oriental and the western - which extend, strengthen and exalt each other in continuous innovation.

'The exhibition Horizontal Memories aims at bringing out decisive basic elements in Yoko Ono's extensive and diverse artistic career. On the one hand we have the Instruction works, which touch on or pose questions about the conceptual principles behind the art work, the participation of spectators in its production and its material realization, the ephemerality and de-sanctification of the object of art. On the other hand there are the object based narrative works expressing the critical vision of Yoko Ono. The exhibition is an intellectual, artistic and poetic treatment of art itself, not to mention the strong social and political references.' - Bunnar B. Kvaran.