Oisin Morrison, Macdara O'Faolain

I really love the playing of Macdara O'Faolain from the band Nuadan. Here is a video of Oisin Morrison on Flute and Macdara an Zouk.

I tried to figure out some of Macdara's accompaniment. I don't think it's really correct, but it helps a bit to understand what he is doing. I think the tune is called The Hills Of Larraga. Please correct me if I'm wrong.

Here's the Link to thesession:
https://thesession.org/tunes/5202