Free festivals are a combination of music, arts and cultural activities, for which often no admission is charged, but involvement is preferred. They are identifiable by being multi-day events connected by a camping community without centralised control. The pioneering free festival movement started in the UK in the 1970s.

A rock festival is an open-air rock concert featuring many different performers, typically spread over two or three days and having a campsite and other amenities and forms of entertainment provided at the venue. Some festivals are singular events, while others recur annually in the same location. Occasionally, a festival will focus on a particular genre, but many attempt to bring together a diverse lineup to showcase a broad array of popular music trends.