United Ireland anthem?

Listening to Flower of Scotland at the World Cup last night made me jealous. I think both jurisdictions are losing out on good national anthems. As a nationalist, amhrain na bhfiann does little to stir patriotic emotions and I don't really need to mention GFSK. In the event of a United Ireland, surely Danny Boy is the only feasible song we could go for?

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I know I'm gonna get slaughtered in the comments.