I wish you could have seen them at Red Rocks Amphitheater here in Colorado. As you said, incredibly beautiful and magical. I've seen many legend play there and nothing compares.
I saw them multiple times with the orchestra- hands down the best was Radio City Music Hall in 1993. Absolutely incredible:
https://archive.org/details/19930617MoodyBluesLiveAtRadioCityMusicHallNYC