François Matarasso first worked as a community artist in 1981. Since  then he has worked in community arts, participatory arts, and as a  writer and researcher. He has just published a new book called A Restless Art,  which looks at the growth of participatory arts and argues that it has  succeeded in moving cultural discussions forward.  In this episode he talks with Owen Kelly and Sophie Hope about the  history of participatory art, and the kinds of things that have inspired  him.