John Cage : the anarchy of silence and experimental art [on the occasion of the exhibition 'The anarchy of silence. John Cage and Experimental art' organized by the Museu d'Art Contemporani de Barcelona, (October 23, 2009 - January 10, 2010) and ... the Henie Onstad Art Centre, Høvikodden, (February 25 - May 30, 2010)]
