Fairport even got on "Top Of The Pops" with "Si Tu Dois Partir". I remember seeing them.
"De Danann" did a whole album, as mentioned above - "Hotel Connemara" - but the only one that worked for me was "Hibernian Rhapsody" - an instrumental version of "Queen's" "Bohemian Rhapsody" - very clever.
Dave Burland used to sing "Willie & The Hand Jive", I seem to remember.
"Battlefield Band" recorded "Creedence Clearwater Revival's" "Bad Moon Rising", and also made a fair stab at Sting's "We Work The Black Seam". Pat Kilbride recorded that too.
But only the late, great Gordon Duncan could play "Thunderstruck"
[ I think it was ] - by "ACDC" on the bagpipes !!