
It's more about the tune. You need something uplifting. The lyrics can be generic national anthem nonsense about the homeland, uniting against a foreign foe, some event in history.
Brazil is not bad.
And Italy.
Not bad, but they both take too long to get into the singing.
France:
La Marseillaise was originally written as a battle song by revolutionaries from Marseilles maching on Paris. Was deliverately written to scare counter-revolutionaries.
Scotland:
A selective choice on my part - this was ahead of a Grand Slam decider against the favourites, England. Will Carling, the England captain, said later he knew they were in trouble when they heard the anthem.