Entertaiment is an activity that stimulates and delights people. It can involve participation or observation and may vary in intensity from a sedentary experience with a film or video game to a live concert or performance intended for thousands. It can be based on a traditional story, such as the Scheherazade tale in the Persian professional storytelling tradition, inspiring music from Rimsky-Korsakov and Ravel, a movie from Pasolini or an innovative video game. It is now common for entertainment to have a serious purpose, as in various forms of ceremony, celebration or religious festival or satire.