Sometimes it helps to post an excerpt. (This is all I could get from a sound sample.)

CHORUS: We're the boys of Belfast town,
Rantin', roarin', ramblin' round.
We're Irishmen of high renown.
That's the boys of Belfast.

We can fight with sword or pen.
We'll never break; we'll never bend.
And if we fall, we'll rise again,
For we're the boys of Belfast.