Step 1: Imagine an instrument that has been lost in the sands of time.
Step 2: Imagine what that instrument sounded like.
Step 3: Record a piece of music employing that instrument.
The idea of an ancient instrument suggested one that used the human body. Chest-thumping, hand claps, finger snaps and flicking stretched cheeks were the result.
I can imagine sitting in a cave and hearing the reflected sound of flicked cheeks. My beard helped stop my cheeks aching and the cotton gloves did too.