I agree with all this about the Irish song and saying goodbye, but there's still one part that gets me. To me this is a modern advancement of that Irish version. However i wonder if this is a younger man who has lost his love. I get this by the (But since it falls unto my lot,
That I should rise and you should not,
I'll gently rise and I'll softly call,
Good night and joy be with you all.) I wonder if in fact he is taking his own life and telling his friends not to worry and reminding them of the good times they have had together. But this is just my interpretation.

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