Woodstock did not have a sponsor, people flooded to Hyde Park for a free concert from the Rolling Stones but now a top price ticket to see Bon Jovi - the 'Diamond Circle VIP Experience' - can cost you something approaching $2,000. What has happened to live music to transform it into the industry it has become? How have concert performances become a successful way of funding music when recorded music has been in retreat? Laurie Taylor speaks to two authorities in the field of popular music studies, Simon Frith and Martin Cloonan, to discuss the social and economic changes which have brought music performance to the fore.