nighttime entertainment conceived by Paul Robert-Houdin, curator of the Chateau de Chambord on the Cosson River, France, where the first one was presented in 1952. Multicoloured lights of changing intensity are directed against the facade of a historic building or ruin. The changes of light are synchronized with a sound track (relayed through loudspeakers) carrying music and the dramatized story of the site. Usually, no live participants appear. Live effects such as smoke bombs or fireworks are occasionally used.
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