The role of the audience in stage performances is changing from passive spectators to contributors making the performance interactive by using different techniques. In this talk, we investigate the connection of audience physiological data to the experienced performance in three performance events with a total of 98 participants. We identified memorable performance moments by assessing, Electrodermal Activity (EDA) showing that the audience’s responses match the choreographer’s intention. Through Heart Rate Variability (HRV) features related to parasympathetic activity, we identified dramatic shifts that are connected to the choreographic development of the performance. Our results show how the audience's physiological responses are linked to the choreographic development of the performance. Based on the findings, we contribute a discussion of the registered physiological phenomena and implications of the audience’s responses analysis to performance and choreography design in general. Furthermore, we walk through the dataset collected from the performance events.