Rainpiece is a composition for flute, viola, harp, and computer, cyclic and open in form, and inviting collaborative improvisation by instrumentalists and computer operator together. It is also a study of water, from torrential downpours and bubbling springs to rivers and waterfalls. The movement of water through the phases of the water cycle is the central metaphor guiding the cyclic and theoretically endless structure of the work. Rainpiece is also a model of community, collaboration, and above all mindful meditation. The metaphor of water is one that focuses the mind, and brings together the community of performers and audience members into a context with which all can connect emotionally. Like the sound of flowing water (which is included in the piece in the form of processed field recordings), the musical ideas of Rainpiece are constantly changing, and yet continually recurring and returning; this connects with concepts of meditation and mantra as well. The work proposes a new direction in interactive chamber music that integrates natural and composed sound worlds, with the goal of shaping a social and acoustic environment that allows for openness, mindfulness, and connection.