Urban Cocoon creates a momentary incursion into public space. It forms a whimsical and transformative space within the bustle of its surrounds. The work is conceived of as a transferable, site-responsive model which can be installed in any large tree. It uses the branches of the tree to rig interactive lights and sound, whilst the bulk of the experience is delivered via wireless headphones. The installation elements are easily adaptable, comprising miniature trees encased in transparent spheres, suspended in netting, which form glowing ‘droplets’ and a single ‘moon’. The audio content can be workshopped locally and tailored to each specific site and community.