In the radio interview linked at 07 Oct 09 - 11:42 Lough Sheelin begins at about 20 minutes into the interview and continues past the recording of the song.

LOUGH SHEELIN tune by John McBreen (a Miss Cusack? wrote the lyric, and it was sung/recorded by John Hughes) around 1954?

If ever I leave this land of mine, and journey across the sea,
For one little spot I'll always pine, the one place I long to be.
The mountains of Mourne are grand I know, as up to the heavens they soar
But my heart will not be by mountains or sea, but down by Lough Sheelin's shore.

For her beauty steals my breath away, every hour of the day
When the sun is dancing or in the moonlight
Down by Lough Sheelin's sandy shores my heart will always be

The trout in its waters calm and clear, the fishermen standing by
The dance of the gnat on every shore
The rise to the taunted fly
The sound of the gently lapping waves as I go drifting along
That's heaven to me and my spirit soars free
Just like the voice of a bird in song

For her beauty steals my breath away, every hour of the day
When the sun is dancing or in the moonlight
Down by Lough Sheelin's sandy shores my heart will always be

(This is my best effort in transcribing the lyric from the interview- any corrections?)
maeve