1970. Keith Critchlow and Alan Hacker. Sound in Space. Edinburgh College of Art.

August 1970. Installation of the structure for Sound in Space by Keith Critchlow and Alan Hacker, presented by the RDG in Edinburgh College of Art (25-29 August) as part of the 1970 Edinburgh Festival Fringe (contemporaneously with Strategy: Get Arts). Four 'experimental concerts' with music by Pierre Boulez, Harrison Birtwistle, Wanhal and Schumann were performed by Hacker and other musicians, with folk songs performed by Corinne, inside the spatial structure designed by Critchlow. Photograph by George Oliver.