The Electro-Harmonix Freeze Sound Retainer pedal captures a moment and turns it into something sonically special. It gives you infinite sustain of any note or chord at the press of a footswitch. Release the footswitch and you are again sample ready. It has three selectable decay rates - fast, slow and a latch mode, to give you smooth tonal transitions. You can hook it up with your existing pedals to get whole new sounds.