The late Frank Harte, from Dublin produced an album of Famine songs - The Hungry Voice.
Years ago the director of the Irish Traditional Music Archive, in a radio programme on the subject (The Great Silence) made the point that there were very few songs (in English) contemporary to the Famine as people were far too busy dying to sing about it.
The greatest legacy in songs were those about the aftermath - the evictions, emigration and political upheavals that followed.
Suggest you look out the largest collection of emigration songs ever published, Robert L White's, 'Irish Emigrant Songs and Ballads' (Bowling Green University Press, 1975); not easy to get, but well worth the effort.
You might consider the beautiful song 'Lone Shanakile' (a famine Graveyard "where the dead, they lay coffinless, pile after pile".
Jim Carroll