Inclusion Criteria:  Legal and cognitive capacity for informed consent. Suffering from primary dysmenorrhea (low abdominal pain associated to menses). (five and above in VAS) Being able to understand and use the measuring tools and questionnaires. 18-25 years old Studying in Manisa Celal Bayar University, Faculty of Health Sciences, Department of Nursing, in the 2020-2021 academic year, in the 1st, 2nd, 3rd and 4th grades,  Exclusion Criteria:  Previous diagnosis of pelvic pathology. Diagnosis of hearing impairment. Diagnosis of neurologic or endocrinological disease. Psychiatric condition diagnosed. Known or reported previous substance abuse. Current use of psychiatric drugs. Cancer diagnosis Diagnosed chronic diseases such as diabetes mellitus or heart disease. Previous advance musical training (defined as any form of music training in addition to that received during normal school classes). Irregular menstrual cycles. Previous pregnancy. Current use of any hormonal contraceptive therapy Having allergy to chocolate Being obese Taking vitamin supplements Students who do not agree to participate in the research