For videos, etc. check the website:
The Irish Times described this Irish duo thus: "Sounds like the ghost of Hank Williams whispering a secret to The Everly Brothers" - I'd say that's pretty spot on.
I simply use the word "superb" to describe the sounds these two young guys produce with the aid of just two guitars and two beautiful vocals. Accomplished musicianship, and tight vocal harmonies... yes, superb.
Here's some background: