GUEST,John, I have searched on the web for David Lindley's tune to listen for myself but can't find it. I've had the experience myself - once - of composing a tune and then later (it was within a few hours) realising, 'Hang on! That's just like ...' so I scrapped it. I suppose if a tune is lodged back in the recess of memory it's possible never to remember where the tune is from and to think it is of one's own making.