In the decades since Woodstock, the construction of temporary and portable architecture to accommodate outdoor concerts has developed from a bunch of hippies in a field to a global construction industry. The ensuing architectures instant and ephemeral nature has led some commentators to describe it as one of the few realisations of the ideas of Archigram. Others have seen its development from flimsy towers of scaffolding to baroque mountains of custom-built scenery as a manifestation of a decadent culture of greed. More tellingly, for Mark Fisher, these primitive structures demonstrate that the only constraint on form is funding. In this lecture he talks about his work designing shows for AC/DC, The Cure, Tina Turner, REM, Walt Disney, the Rolling Stones, and Pink Floyd. Mark Fisher studied and taught at the AA - running the Nice Ideas unit in the early seventies.