Depressed expat health insurance customers may be among the people who could benefit from musical therapy.
Dr Rick Norris, psychologist and author of Think Yourself Happy, claimed that songs can "promote positive thoughts" as they trigger people's memories.
Other times, music can simply "distract us from our negative thoughts", breaking destructive thinking processes and promoting wellbeing, he said.
Depression often occurs when individuals begin to establish "introspective thinking patterns", wherein they constantly ponder subjects that make them upset, the psychologist explained.
"Consequently, this brings their mood down," he stated.
Dr Norris noted that sufferers of this condition typically find it difficult to visualise happiness in the future and do not enjoy life as thoroughly as they should, so these "negative introspective thought patterns" must be broken.
Musical therapy can also benefit people with a whole range of issues, including mental health problems, learning difficulties, autism, eating disorders and addiction, according to the Association of Professional Music Therapists.