Play backing tracks in sync with Lyrics / Chords and DMX Stage Lights

Backing tracks can be as simple as a series of clicks like a metronome or a full musical arrangement. The audio files usually contain a “click-track” which only the performers can hear and use to keep time and stay in sync digital accompaniment. 

Generally, PA system amplifiers and speakers have a single output channel (mono), and most digital audio devices are stereo (two channels). The two channels in the stereo system get split into an output track sent to the PA speakers and a click-track sent to the performer’s in-ear monitors.