Research in the Psychology of Music uses psychological theories and methods to interpret and understand musical sounds, musical behaviours, and the effects of music. The subject is strongly inter-disciplinary, and generally combines empirical data collection, through observation, experiments, surveys or otherwise, with theoretical innovation. The scope of research in Sheffield ranges from fundamental questions related to music perception and cognition to applications of music psychology in everyday life. The breadth of research is reflected in its three main research units – Music, Mind, Machine in Sheffield, Music & Wellbeing, and Sheffield Performer & Audience Research Centre.