Raves may last for a long time, with some events continuing for twenty-four hours, and lasting all through the night. Some electronic dance music festivals have features of raves, but on a larger, often commercial scale. While some raves may be small parties held at nightclubs or private homes, some raves have grown to immense size, such as the large festivals and events featuring multiple DJs and dance areas (e.g., the Castlemorton Common Festival in 1992). The music is often accompanied by laser light shows, projected coloured images, visual effects and fog machines. The music is amplified with a large, powerful sound reinforcement system, typically with large subwoofers to produce a deep bass sound. Occasionally live musicians have been known to perform at raves, in addition to other types of performance artists such as go-go dancers and fire dancers. The style is most associated with the early 1990s dance music scene when DJs played at illegal events in musical styles dominated by electronic dance music from a wide range of sub-genres, including techno, hardcore, house, and alternative dance. A rave (from the verb: to rave) describes a dance party at a warehouse, club, or other public or private venue, typically featuring performances by DJs playing electronic dance music.
