This video is a screencast of the software sound spatialization model created in SuperCollider. The model simulates how a virtual listener could hear the different sound sources in the performance space. Experiment 2 is one of a series of experiments using the model. The goal of experiment 2 is to research the different perceptions of sound materials as they move between the different instrumental groups. Different relations between groups and materials emerge in the perception of the experiment. To be heard with headphones.