Doubling
gracing technique (in order of complexity / frequency): b2
2 consecutive gracenotes; The example given here, taken from Logan, starts on a¹; The target note descends from a²-g¹; Thus we see the following result of the Doublings:
[a¹-a²-g²-a²; a¹-g²-f²-g²? *]; a¹-g²-f²-g²-f²; a¹-g²-e²-f²-e²; a¹-g² ⇢d²-e²-d²; a¹-g²-c²-d²-c²; a¹-g²-b¹-d²-b¹; a¹-g²-a¹-d²-a¹; a¹-g²-g¹-d²-g¹.
NB: Example(s) to be replaced with staff-notation.
Logan, [?]: Complete tutor for the Highland bagpipe [London, [1936?]]. Entirely revised by captain John MacLellan… London, s.a. [ca. 1980], p.XI (*seem to be executed with Singlings).