Hymn for 12 Butterflies is an ode to twelve butterflies that have gone extinct from Danish nature. It is an experiment more than an actual song or finished composition. It emerged after our process of reversioning stereo material, and entering a new phase of letting go of songwriting as we knew it and exploring new approaches and methods. In this experiment, we juggled with multiple elements: the improvisational system/instructions, spatial movements and language around those movements, and joint performance/composition methodology, including interface design and playing with spatial agency and chance between human and non-human actors.