With almost 40 years' combined experience promoting UK music festivals, James Scarlett (2000trees and ArcTanGent) and Gavin McInally (Damnation) don't just pull back the curtain on the industry, they rip it down and bulldoze through the stage, right into the dressing rooms.

What does it take to book Enter Shikari or Opeth? What are the exact costs of setting up a small town on a farm for pop punk fans or transforming an industrial estate into a mecca for metal devotees? And is there such a thing as a booking agent you can trust?

With startling honesty, rarely seen in a business full of chancers, Gav and James talk about the highs, the lows and the downright ridiculous - of surviving, and thriving, in the promoting world.