Background: In this abstract we present the final chapter on a thesis journey investigating the effect that background music has on the operating surgeon. Studies from this thesis have been presented at ANZSVS conferences prior, including the BRAHMS study (an ANZSVS survey), the MOSART Study (field investigation) the STRAUSS Study (laboratory investigation). In this paper we use these previous studies to contextualise a final study where healthcare professionals' (HCPs) experiences of intra-operative music are explored qualitatively. Methods: Semi-structured interviews with seven HCPs (surgeons, anaesthetists, nurses) were analysed using qualitative content analysis with an abductive, critical realist approach. Results: Five themes emerged: (1) music reflects team cohesion; (2) contributes to therapeutic space; (3) is not a panacea; (4) enacts power and protection; and (5) serves as an environmental cue. Music fostered camaraderie and calm but could cause tension, reinforce hierarchy, and disproportionately affect some staff. Conclusions: Music plays a nuanced, multifaceted role in theatre. Team-led, flexible frameworks may best support inclusive, situationally appropriate use.