Now I have that in my head, Rachael! Here it is for those wondering:

Halfway down the stairs is the stair where I sit
There isn't any other stair quite like it
It's not at the bottom
It's not at the top
So this is the stair where I always stop.

Halfway up the stairs isn't up and isn't down
It isn't in the nursery, it isn't in the town
And all sorts of funny thoughts
Run through my head
It isn't really anywhere, it's somewhere else instead.

Do you know They're Changing Guard at Buckingham Palace? Must confess I don't like that, but I'll be singing it tonight now LOL.