This is not a touch based instrument - rather a more engaging experience. It works as follows: 1) Change the rotation of your phone to determine which drum / cymbal you will be hitting. 2) Then pretend your phone is a drumstick and bang down in the air as if you are hitting a drum. (Don't hit anything physical with your phone if you want it not to break). Your phone will play the sound of that drum or cymbal. Important: MAKE SURE YOUR phone's ORIENTATION is PORTRAIT, not LANDSCAPE and not set to auto rotate. This app needs certain hardware / software capabilities to manage the sensors. If your phone does not seem to act according to description, ie. change which instrument based on rotation / make the drum sound with a hitting down motion, your phone probably does not have the capablities for this app.