You can see and hear an Irish Orthodox icon and chant from the 8th century at this website:
That's great! Where did you find this recording?
Well, it took me about 2-3 years of searching to finally find pre-schism Western European Orthodox chant.
Of course, Latin wasn't that hard to find, but French, English, Irish, Scottish, etc. were almost impossible to locate.
By the grace of God, I ended up contacting a French Orthodox bishop who graciously sent me two discs of exactly what I had been looking for:
pre-schism Western European Orthodox chant. These two discs are the source for the following OrthodoxMysteries
+Glory to God for all things