'He put his key in his mock-Tudor door' was a show-stopping line when Miles sang it. I would rate it alongside 'So - with the tears still streaming down her pullover -' in the monologue The Wedding That Wasn't, and the poet Barker's immortal 'Sex with a concertina is rarely accomplished discreetly.'

Parody is a special class of adaptation; it doesn't usually move the song on or lead to further growth. Some parodies come to displace the original: Tom Brown has pointed out that 'I'm a Mortal Unlucky Old Chap' was collected from a great many English country singers, but the song it parodied ('I'm a Happy-Go-Lucky Old Chap', about an improbably cheerful farmer) didn't survive. The spoof opera The Dragon of Wantley apparently killed Handel opera stone dead for a generation.

The Sussex source singer Gordon Hall used to extend and parody his traditional songs: listen to his version of The Constant Lovers, which has a magnificently raucous happy ending, or his versions of To Be A Farmer's Boy or The Farmer's Toast:

'I have lawns, I have bowers,
Jacuzzis and showers,
Two yachts and a villa in Parma;
I have videos and tellys,
Wax jacket, green wellies,
Sod you, I'm all right, says the farmer.'

Valmai (Lewes)