Well, I've been giving this subject a little bit of thought and I quite like ' I vow to thee my Country ' suitable for everyone to sing-a-long to. Obviously some words could be changed to bring it up to date though.
It has happy memories for me as well as I used to play this on my recorder in school assemblies...oh the noise...I can remember it now
It goes something like this......recorders ready and....
I vow to thee, my country, all earthly things above,
Entire and whole and perfect, the service of my love;
The love that asks no question, the love that stands the test,
That lays upon the altar the dearest and the best;
The love that never falters, the love that pays the price,
The love that makes undaunted the final sacrifice.
And there's another country, I've heard of long ago,
Most dear to them that love her, most great to them that know;
We may not count her armies, we may not see her King;
Her fortress is a faithful heart, her pride is suffering;
And soul by soul and silently her shining bounds increase,
And her ways are ways of gentleness, and all her paths are peace