This working paper 'Sonic City', published by the Martin Prosperity Institute, looks into the changing economic geography of the music industry in the United States. According to the authors, Richard Florida and Scott Jackson, there is a lack of serious scholarship around music and its social, economic and spatial context. However, they also state that "recent research on the economics of creative industries, the sociology of cultural production and on the geography of innovation can help identify and illuminate key dimensions of the geography of music and of the music industry." Their analysis suggests that the music industry is simultaneously becoming geographically both more concentrated and more spread out. According to the authors, this tendency can be explained by the ongoing economic and spatial restructuring of the music industry brought on by technological changes which have lowered the cost for producing, distributing and consuming music.