From Uniform books, (HERE), is a scholarly exigesis of the TV programme Detectorists. It includes a Foreword by the programme's writer and lead actor, Mackenzie Crook:
I was detecting on my own… and dug down four inches to find an exquisite bronze hawking whistle. I took a few minutes to unclog the mud with a piece of straw, then held it to my lips and blew. The note that issued from the whistle was a ghost, a sound unheard for centuries, and the last person to hear that sound, that exact sound, was the person who dropped it just yards from where I was standing. And it wasn’t a faint, feeble ghost either: it was an urgent, piercing shrill that echoed across the field and back through time.