Who was the orchestra for live show?

I know it the DVD booklet it says the Oklahoma Film Orchestra, but the musicians listed are Irish. (Aisling Ennis, the harp player, is Irish. I did some IG stalking)
 Did they have separate Orchestras for the DVD and CD?

The CD booklet says Oklahoma Film Orchestra. And one of the recording locations is Purcell, Oklahoma. I also thought that was interesting / random.

I looked at the credits of the PBS special. It says Kenneth Rice is the 'orchestra contractor', and no orchestra group is listed. So I think the live orchestra was contracted out to individuals or small groups (e.g. chamber orchestras). I think this is Kenneth Rice:
https://www.cyberstrings.com/bio

So, yeah. I think two sets of musicians.