The dance floor is usually lighted by different kinds of lights which spark through out the club. The feel given to a night club is different than that to other clubs and bars in terms of the themes and environment given to the clubbers. The music in night clubs is usually played by a DJ who plays fast music such as pop or dance items. The lighting forms an important aspect in the night clubs as the revolving lights of different colors in the night club gives a charm to the whole night club. Different types of lighting have been arranged for the night clubs which give effect to the whole night club. Flashing of different colored lights is a common sight in these clubs. Similarly the audio system used in night clubs is of immense importance as the whole night club dances to the rhythm of the music. It can be said that night clubs are basically designed to give the clubbers a change in the environment of dancing and a freedom which not all the clubbers can experience in the outer world. The dance floor is usually lit up by flashing lights in which people cannot usually view the faces of each other clearly. Nowadays night clubs also include a bar which provides people with beer and alcohol to drink. The night clubs are usually open in the night and closed in the daylight hours.