String Theory

2016 album, from Texas.

Their website:
https://stringtheoryirish.com/home

They are:
- Jesse Ramirez (guitar)
- Linda Relph (fiddle)
- Nathan Kennedy (fiddle)
- Matthew Cook (vocals/bodhran/mandolin/octave mandolin)
- Bill Zauner (upright bass)

Looks as though they have a 2019 re-release of this album, which has four additional tracks (Lakes of Pontchartrain, Paddy’s Green Shamrock Shore, The Coolin, and Auld Triangle). Didn’t notice until after I posted this one.

I think this is the correct iTunes link. Above is Lee Ritenour.
https://music.apple.com/us/album/string-theory/1166609595