Bob,Thanks for response.
Two follow up questions
Is your High D tuneable Susato easy to play with respect to how hard you have to blow ?
Is the fingering as follows (for both octaves? ) :-
x = finger down 0 = hole open Top of whistle is at left hand side.
D - xxxxxx E - xxxxx0 F# - xxxx00 G - xxx000 A - xx0000 B - x00000 c# - 000000 c Natural - 0xx0000
Jiggers