ha - sorry Pete - I'm reading a book about climate change and soaking off my nails, and listening to the cricket (I wish) and for some reason I read 'leadfingers' (as you know I'm horribly dyslexic)! Can't see the pic for some reason I'm afraid.

Jon, I agree that GDAE is the normal' OM tuning, but I'd suggest that a single tone difference in one course is insufficient reason to change the name - we don't change the name of the guitar when we drop the bottom E to D, or even go to DADGAD or C modal after all.

Bouzoukis are tuned DADA, GDGD, ADAD, GDAD and many more. The old Greek Trichordos were, I think, tuned however one fancied, (though most usually Dd aa dd like a mountain dulcimer with extras), and the Tetrachordo was I believe Cc Ff aa dd, which is closer to the guitar in terms of intervals than the mandolin family.

I don't think there is a precedent for a Cc Gg Dd Aa boumandolacellozoukilin, but if I can make it work I think it will make an interesting noise.

Tom