The project was developed in the Advanced Project Course at KTH University, Stockholm. With Jonathan Adam and Adrian Latupeirissa, we designed and evaluated an interactive playground installation. In particular, we design a set of objects which can easily be attached to trees, and which invite children to explorative play. Through pressing buttons, playing children can elicit immediate auditory feedback from the “tree nodes,” as well as manipulate a more complex soundscape of musical loops. An open-ended user test with a group of young children revealed some of the effective and faulty aspects of the system and provided insight into the potential for digital interactions in the physical landscape of play.