Uilleann pipes
While the mouth-blown warpipe was alive and well upon the battlefields of France and other parts of Europe, it had almost disappeared in Ireland. The union or "uilleann" pipe emerged during the early 18th century around the same time as the development of the bellows-driven Northumbrian smallpipes and the bellows-driven Scottish Lowland bagpipes. All three instruments were far quieter and sweeter in tone than their mouth-blown predecessors. Essentially their design required the joining of a bellows under the right arm, which pumped air via a tube to a leather bag under the left arm, which in turn supplied air at a constant pressure to the chanter and the drones (and regulators in the case of the Irish Uilleann pipes). Geoghegan's tutor of the 1740s calls this early form of the uilleann pipes the "Pastoral or New bagpipe". The Pastoral pipes were bellows blown and played in either a seated or standing position. The conical bored chanter was played "open", that is, legato, unlike the uilleann pipes, which can also be played "closed", that is, staccato. The early Pastoral pipes had two drones, and later examples had one (or rarely, two) regulator(s). The Pastoral and later flat set Union pipes developed with ideas on the instrument being traded back-and-forth between Ireland, Scotland and England, around the 18th and early 19th century.