You were asking for seldom-sung old songs. Assuming you're not talking about the sean-nós tradition, what about songs seldom sung nowadays like two Wexford favourites, Come to the Bower and The Streams of Bunclody? I'm sure someone will have the words.

Songs that are always sung at any Irish séisiún are The Parting Glass (which is usually the finisher), Éamonn an Chnuic, I Know My Love, I Know Where I'm Going, If My Love Leaves Me...oh, it goes on and on. Email me at jt.thompson.source@indigo.ie (but take out the .source, it's just an anti-bots device) and I'll find you the words.