The intervention will be performed four times per patient at a frequency once weekly. An effort shall be made to ensure that each treatment is exactly seven days from the previous one within ± one day. The musical hearing will include Helen Bonny's program "Caring", which is proposed by the author of this Music therapy model as the most suitable for patients with chronic and severe pain. The program is as follows:

• Haydn - Cello Konzert in C, Adagio
• Dvorak - Serenade in E-Dur, Larghetto
• Warlock - Capriol Suite, Pieds en I'air

The Wong-Baker Face Scale will be used to assess the pain with a simultaneous visual, numeric and functional analog display of the pain the patient is experiencing at the time of the interview. The scale depicts a series of six (6) face faces. The 6 faces are given the following marks:

• 0 no pain
• 2 slight pain not affecting certain activities
• 4 slight pain affecting certain activities
• 6 moderate pain that does not affect certain activities (such as telephone, TV, reading etc)
• 8 severe pain affecting certain activities (such as telephone, TV, reading etc)
• 10 intolerable pain that does not even allow for simple voice communication

The SF-36 questionnaire, simultaneous recording of physical and mental health status of patients will be performed.

The Barthel scale has been used worldwide since it was created in 1965. It is a balanced instrument for scoring basic mobility, self-care and restraint activities, and has 10 thematic areas. The overall score varies from 0 to 100, indicating full dependency and full autonomy, respectively. To be considered autonomous, the patient should not seek human assistance in any of the activities rated. Scale of self-service assessment - Barthel scale

The Zarit Burden Interview (ZBI) questionnaire was created to measure the burden on careers. It consists of 22 questions. The scale score varies from 0-88 and the smaller the score, the smaller the charge.