Cultural wealth, correlation and intercommunication during educational process are the live and widely examined problems. But musical activity as the method of correction of intercommunication system and its development is still undiscovered area, because it has been mainly examined as the direct way of cultural education of person. Based on the results of research, the system of methods of musical activity was created and the indicators of its significance were highlighted. They compose the theoretic content of research and show its novelty. The object of research is the intercommunication of educated subjects during the fortepiano lessons. Aiming to disclose the correlation of educated subjects, influenced by musical factors during the fortepiano lessons, the hypothesis about functioning of general intercommunication system of educated subjects, if the musical factors stimulate its formation, was raised. Tasks of research: description of conception of intercommunication system during the lesson, analysis of musical factors, influencing the intercommunication of educated subjects, examining of influence of musical factors to correlation system of educated subjects during the fortepiano lessons. Methods of research: Analysis and summation of scientific and methodic literature, written inquiry, evaluation of experience in accordance with the scale of emotional empathy, the pupils’ essays; qualitative and quantitative analysis and summation of the research data.