Natural Scale - memory aid

Sang By Julie Andrews :

Do - A deer, a female deer.
Ray - A drop of golden sun.
Mi - A name I call myself.
Far - A long long way to go.
So - A needle pulling thread.
la - A word to follow So.
Ti - A drink with jam and bread, which brings us back to:-
Do.
J.A. has A vocal range of no -less than 7 octaves, Amazing when you consider that a Six String has 3