Psalm 31 - copyrighted / any information welcome

Hello @all,

anybody out there who can tell me anything about the tune "Psalm 31" which I found on YouTube here

It is a great tutorial, I love the tune, and I also have a nice arrangement from it with my band.

I already got in touch with Benjamin Esh, but unfortunately, I didn't get an answer from him concerning the copyright or  the history of that song.

I would like to publish our interpretation from my band (dulcimer, bass, violin, accordion) on YouTube, but I don't know, if it would be alright.

Any hint is appreciated.

Thank you all.

Best regards. Rainer.