I encourage you to watch this performance of a singing group called, “Voices Of Service”. They are four active/retired members of the United States Army. All four have had to deal with the effects of being in combat including PTSD. They found that singing was a way to help them deal with PTSD. Their goal on America’s Got Talent is to spread the word to other soldiers or anyone who has been through a traumatic event that singing is really good therapy. Their performance is amazing. Their message even better.
https://www.youtube.com/watch?v=9jBCiyEC4xg