H C Longuet-Higgins correspondence regarding the Open University lecture "The perception of music - a case study in theory construction" Correspondence surrounding Longuet Higgins lecture entitled ' The perception of music - a case study in theory construction ' on Friday 28 July 1978 as part of the Cognitive Psychology Course at the Open University, Faculty of Social Scienses, Milton Keynes. Copy fo lecture notes not included. 1978