A button to automatically move/shift the current song that is playing to the left or right side of the interface. For example, if a DJ is right handed, the button will allow for the DJ to do most of the mixing/scratching with the right-side turntable. Once the mix/scratching is complete, and a new song needs to be loaded, the button will allow for the song that is playing live, to automatically be moved to the left side of the interface turntable and continue to play without interuption. This way, the DJ can continue to use the right side turntable.