Put nearly 140,000 people and hundreds of attractions - from the mainstream to the surreal - into several thousand acres of prime English farmland for a weekend and, without very carefully managed safety and stewarding, there is the potential for problems.
The most obvious proof of doing a job well is being asked back to do it again. AP has been a presence at Leeds Festival, which takes part over the August bank holiday weekend, since it started in 1999.
The Forest Tour was launched in 2001 with Jools Holland and the Levellers performing at four participating Forestry Commission sites. Over the years the tour has grown in stature and the Forestry Commission is now a major promoter of summer concerts.
July and August sees the 1980s return to Henley-on-Thames and Scone Palace in Perthshire, as the annual two-day Rewind festival brings legwarmers, mullets and ra-ra skirts briefly back into fashion.