Review for Sound Therapy on People

As a paramedic I see many things. I witnessed reiki being given by a daughter to her mother who we had attended and it blew me away! I knew Lyndsay did reiki and called her to have a chat. She told me about sound healing therapy.
The session was very relaxing and she picked up on my feet being tired. I explained I was training to box for charity. I found the whole thing really good and left with my legs tingling which lasted for a few days.
The second session felt the same but she explained about her yawning to remove negativity and she yawned a lot! The third session seemed to be similar but she used different forks.
What I found was I seemed to find logic and order in my life which has helped with my feelings in my personal and work life.