A nightclub, music club, or club, is an entertainment venue and bar that usually operates late into the night. A nightclub is generally distinguished from regular bars, pubs, or taverns by the inclusion of a stage for live music, one or more dance floor areas and a DJ booth, where a DJ plays recorded music. The upmarket nature of nightclubs can be seen in the inclusion of VIP areas in some nightclubs, for celebrities and their guests. Nightclubs are much more likely than pubs or sports bars to use bouncers to screen prospective clubgoers for entry. Some nightclub bouncers do not admit people with informal clothing or gang apparel as part of a dress code. The busiest nights for a nightclub are Friday and Saturday night. Most clubs or club nights cater to certain music genres, such as house music or hip hop. Many clubs have recurring club nights on different days of the week. Most club nights focus on a particular genre or sound for branding effects.