It's back! 'For anyone genuinely interested in comedy and comedians, this is the must-see show of the festival' ***** (Scotsman). Fast, furious, reliably brilliant, different every night! Literally as they walk onstage, in full view of the audience, comedians are flashed a never-before-seen set list of topics and must instantly create a spontaneous and original new stand-up set, right then and there. No existing material allowed; it's all improvised! Previous set listers include: Trevor Noah and Robin Williams, who raved about it: http://youtu.be/93464gfTA50 (here is Robin's actual bit on the Sky Atlantic TV series).