Since I live in a Veterans' Home where the eleven hundred and twenty-five residents have an average age of over 78 years, I will offer you some advice. The folks of African heritage here like most such songs as would be written and/or played by Bob Dylan or Hank Snow or Rogers and Hart or Eubie Blake or Louis Armstrong or Meredith Wilson or Hoagy Carmichael or Glen Campbell or Flat & Scruggs or Woody Guthrie or..........you name it.
The important thing to remember is that most folks who have lived long enough to find themselves in an "Old Folks Home" usually don't make issues of such foolish things as racial divisions. There are exceptions, but you can't arrange your program on their behalf.
They will be so happy you are here, you can't miss.
God bless you for caring. Celtic stuff will be just fine.
Spud