This link may help. The version I sing is different from those posted above.
http://www.google.co.uk/search?hl=en&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=ar+eirinn+ni+neosfainn&spell=1

(Blicky maker is not working for me just now!)
Human blickifier working just fine. -Joe-