Elton John app lets concert audiences mix his music

A device which allows the audience to have their own mixing desk at a concert is being used at Elton John’s final tour.

Individual instrument tracks from backstage are transmitted via radio signals to the device and then synchronised with the sound being sent - meaning there is no delay.

Audience members can then mix the music on their smartphones in real time, allowing certain instruments or vocals to be made louder than others.