Interaction in chamber music ensembles has been studied from various fields of knowledge and from different approaches. However, bibliographic review shows that although interaction in chamber music ensembles has motivated the work of numerous researchers, investigation to date have tended to focus on group social organization, musical and social coordination and communication between musicians. Several studies still maintain a solipsistic approach of the musician as someone who receives information from their musical partners, observes their behaviour and interprets it reflectively. In addition, most of the research focuses towards bodily movement from a sensorimotor perspective rather than as an expression of musicians intentionality. Up to now there are still certain aspects of musical practice related to musicians experience in interaction, the attributions they perform and interaction dynamics that have not yet been addressed. The Second Person Perspective of mental attribution - 2PP - (Gomila, 2002; Perez, 2013) focuses on a particular type of interaction (direct, face-to-face and bodily) and it is considered that it can offer answers to understand certain aspects of communication between musicians that have not yet been explored.