"Apart from its intrinsicly weird tone, don't you find it creates a sort
pleasing dissonance with the drones which makes it stand out? I thought
maybe that was what was meant. Perhaps that's just my chanter though.
Yes, I think it's nice against the drones. It is indeed a strange note.
I use it
instead of the bottom D sometimes. It sounds dissonant and weird yet
at the same time. Lifting the chanter off the knee and playing ghost D
the bottom note gives a different tone to the other notes as well when
playing them. At least on my chanter.