FLO is designed and dedicated to create an intuitive music playing with tactile and sensory experience for advanced music producers as well as beginners even with minimal skills.The inspiration is from the traditional Chinese instrument, the Guzheng. Thinking in a counterfactual way, as most of the synthesizer in the market present a western symbol as the piano keys, I investigated whether there were new ways that might yield to interesting results, where the synthesizer would have a different logic of operation as well as the appearance of design.