The name of a song based on a series of letters between an Irish father and his son who has moved to America?

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Used to hear this song on "Thistle and Shamrock."











does anyone know the name of it please!?!?!

The name of a song based on a series of letters between an Irish father and his son who has moved to America?
Get Back buy the beatles, 'cause they didn't leave the wife any housekeeping
Reply:Danny Boy