The power of healing that music possesses is absolutely incredible. All things are music. Learning how to find harmony within ourselves by using external frequencies and harmonics is a fantastic tool. I hope that your friend and you work out a system to be able to incorporate it in his practices. Just a thought for future posts, perhaps add a little bit of research that has been conducted on the powers of healing and music. If you add good citations to your posts with a bit more photography maybe, then you are more likely to receive a higher upvote from Lotus curators.