Popping [?]
emphasising octaved notes
Method of emphasising octaved notes by lifting the chanter off the knee just as they begin to sound, resulting in a slight crescendo and a small gradual change of pitch; To obtain the required result, a piper must stop the chanter, build up the necessary pressure, sound the note in stopped position, and immediately lift the chanter again; NB: ➺ Popping [= Cranning?].
O’Canainn, Tomás: Traditional music in Ireland [1978]. London, 1979 (2), p.85.
Crowley, Tadhg: How to play the Irish Uillean [sic] pipes [1936]. Cork, 1974 [facsimile], ➺ p.14.