In response to the ever-shifting identity of Kulangsu throughout its colonization by external culture, GAP+ attempts to regenerate new identity of local culture based on personal soundwalk experience at the presence of Kulangsu. Drawing inspiration from the "live set" music — where the mechanisms of sound mixing shape the aural space — GAP+ offers a critical lens on the conservation of "historical" urban spaces. It constructs an auditory landscape, a soundscape that engages with the commercial-dominated urban soundscape. GAP+ redefines architectural presentation, introducing novel concepts of "real-time" and "remote" experiences within the built environment, in form of spatial instrument. Audiences' gestures unlock the potential for real-time sound generation, transforming each audience into a performer, to re-interprete the soundscape.