Yes - a great choice, Helen.

I quite like "Service song" by Harry Robertson.

SERVICE SONG
Lyrics and Music: Harry Robertson
Arranged by Evan Mathieson
When I was a boy on my daddy’s farm, he sometimes used to say,
Take the brown cow out for service, son, to the farmer down the way.
Each time I took the cow down there, the farmer he would say,
Just leave the cow with me my boy, and come back another day.

For years it had me puzzled — what did this service mean?
’Til one day I decided that this service must be seen,
Through a knot hole in the barn door — with a youthful naked eye,
I saw what they’ve been doing to us in the years that had gone by.

We hear a lot of talk these days, from companies big and small,
What would we do without them, they’re a service to us all,
We’re here to serve the people — just buy from us once more,
For years we’ve really served you — but we’d love to serve you more.

When you hear a politician say, “I’ve served my country true.”
I don’t know what he means by that, so I’ll leave that one to you.
We’re here to serve the people — elect us just once more,
For years we’ve really served you — but we’d love to serve you more.

So in the next election friends, when you put your cross on the dot,
Be sure you elect a proper man — or you’ll get what the brown cow got!
We’re here to serve the people — elect us just once more,
For years we’ve really served you — but we’d love to serve you more!

(Repeat last two lines — with great gusto — for final chorus)

Any of Harry Robertson's songs would be good.