Monochrome stringed instruments are playing an increasingly important role in human healing. The specific sounds have a strong salutogenic effect and are used successfully in pain medicine, neurology, neonatology, hospice care, psychiatry and psychosomatic medicine, among others. This collection of essays takes this diversity into account. Experienced music therapists from Austria, Germany and Switzerland present their extensive knowledge of the body tambura, monochord and body monochord. Insights into new areas such as prevention research and the use of the concert monochord in child and adolescent psychiatry stand alongside in-depth examinations of trance and mystical experiences, as well as experiences from the field of psychiatry, addiction treatment and palliative care.