PowerAMP Shaker allow you to control PowerAMP playback , just shaking your phone to left or right.A lot of settings allow you more control of using this application. How to control:Shake to left – to change track to previousShake to right- to change track to nextDouble shake to left – to change folder to previousDouble shake to left – to change folder to nextTry using clear moves. To better result make some practice and use settings to make it more intelligent.Please make sure, your accelerometer is calibrated well.Please try demo version before buy.