This book is based on the results of about forty years of work with one type of analysis of musical communication. It offers an elucidation of the meaning of music as, in addition to other factors, a fictive action and refers to the context of the intrapersonal, interpersonal and social aspects of communication. It does so against the background of the nearly unknown century-long history of Czech experimental aesthetics. At the same time it provides insights into a field of the humanities in the totalitarian era by referring to the roots of the method in the context of semiotics, aesthetics and cybernetics in the 1960s.