Kannmacher's Multidrone Pipes: Push About the Jug

This jig is from the Gentlemen Piper's Repertoire, printed in the tutor for the union pipes by O'Farrell, vol. 2, p. 130. It changes from e minor to D major and back, so it is apt for the use of the drone groups e-b and D-d', changed by my multidrone switch in full flight. This right hand movement demands some variation in the melody line, however. There is better players than me, who may thumb along the switch for change without affecting the tune. Chanter: anonymous, 19. century. Drones: Matt Kiernan / Podworny. Regulators: Kannmacher. C sharp set.

[@FOVoid]

How is air being pumped into the instrument?
Ps.: This sounds amazing!

[@tomkannmacher4802]

By a bellows under the left arm.