The use of music as a basis for overcoming depressive personality disorders is possible only if the individual is ready for this therapy. Music therapy affects, first of all, the very structure of personality, its dynamic filling with current social and political tendencies, and allows to highlight problem areas, which are often viewed as complex in the structure of other psychological problems. The purpose of the current study was the determination and justification of the corresponding criteria in relation to this, as well as the methodology for diagnosing the studied phenomenon. The diagnostics involved five groups of psychologists (in general, 438 persons). The preparedness of therapists for preventive and remedial work with patients with depressive conduct disorder was evaluated. To test the truth of the statistical hypothesis the Wilcoxon-Mann-Whitney criterion was used. The novelty of the article is determined by the fact that the use of music is considered only as a therapeutic measure, and not associated with the use of medication or sedation. The developed system of the use of music therapy can be implemented only under the condition of applying special factors and principles. These factors include, first of all, the ability to respond to the personality and, if necessary, adjust the therapy strategy.