DJ, Dj-ing

DJ, Dj-ing
A DJ or deejay is a person who selects and plays prerecorded music for an audience.There are several types of DJs. Radio DJs introduce and play music that is broadcast on AM, FM, shortwave or digital radio stations. Club DJs select and play music in a bar, club, disco, a rave, or even a stadium. Hip hop DJs select, play and create music with multiple turntables, often to back up one or more MCs. In reggae, the deejay is a vocalist who raps, toasts or chats over pre-recorded rhythm tracks while the individual choosing and playing them is referred to as a selector. Mobile DJs travel with portable sound systems and play at a variety of events.

2.2.1 Equipment
DJ equipment consists of: sound recordings in a DJs preferred medium (eg. vinyl records, compact discs, computer media files).A combination of two devices, or sometimes one if playback is digital, to play sound recordings, for alternating back and forth to create a continuous playback of music (e.g. record players, compact disc players, computer media players such as an MP3 player).A sound system for amplification or broadcasting of the recordings (e.g. portable audio system, PA system) or a radio broadcasting system.A DJ mixer, an electronic, usually two-four channel, mixer with a crossfader used to smoothly go from one song to another (using two or more playback devices) .

Headphones, used to listen to one recording while the other recording is being played to the audience.Optionally, a microphone, so that the DJ can introduce songs and speak to the audience.Other equipment could or can be added to the basic DJ set-up (above) providing unique sound manipulations. Such devices include, but are not limited to: Electronic effects units (delay, reverb, octave, equalizer, chorus, etc). Some club DJs use a suboctave effect which creates a very low bass sound and adds it to the mix.