The reader is familiar with such books as "Entertaining Physics," "Entertaining Chemistry," Entertaining Biology." "The entertaining theory of music * adds to a number of these publications. In an accessible popular form, she introduces the basics of musical knowledge contained in a traditional textbook. The richest world of sounds is viewed through the prism of the universal law of symmetry, which serves as a single core for natural-scientific and humanitarian ways of cognition, therefore, it is natural for authors to turn to linguistics. bionics, mathematics, physics, chemistry, sociology.