Originaly, Selector (Selecta) is the one who selects and passes the records (vinyls) to the guy that is playing them on the soundsystem. It originated in reggae/danchall music, but nowdays the word is used to describe a DJ (wich is wrong - but accepted)

DJ - one who selects the tunes. normally used in ragga, drum n bass and garage

Simply another word for a DJ. Often used in electronic music, but sometimes used for rap and anything else involving live concerts and vinyls.

2. (alternate definition) A DJ mix control used to select between multiple inputs on a single fader channel. Also can be used as a makeshift kill switch for cutting sounds while mixing/scratching

Person with musical style