The song is 'Beyond the Distant Hills' by Lawrence Dean, recorded by Martyn Wyndham-Read on 'Oceans in the Sky' and by Whaley and Fletcher on 'Fit for Reclining'.

BEYOND THE DISTANT HILLS
(Lawrence Dean)

The wheel of fate rolls ever on, it takes us where it will.
Some must stay and some must go beyond the distant hills.
You always were a friend to me, we've been through thick and thin.
These parting words I'm bound to say. Where do I begin?

CHORUS:
   For I don't know the road you travel, nor what lies in wait for you,
   But my heart is with you always. Now adieu, dear friend, adieu.

As I recall in days gone by our friendship and our cheer,
I can't foresee much joy for me when you're no longer here.
And far across the ocean wide, wherever you may be,
As oft as I shall think of you, I hope you'll think of me.

And so I come to wish you well for ever from this day.
May fortune shine a light on you, and guide you on your way.
For I don't know the road you travel, nor what lies in wait for you.
But my heart is with you always. Now adieu, dear friend, adieu.

Lovely song