The Kaossilator Pro, at heart, is an audio phrase/loop recorder. You can record to the 4 pads from the internal synth sounds or from either the Mic or Line inputs. Pres the record button and a pad button and recording starts. Press record again and you are in audition mode where you can try out a 2nd patch or try playing something different in the through the Mic or line inputs. My websites: kaossilator pro