One of the treasures of Irish traditional music,  the Uilleann Pipes are a wind-reed instrument that are only manufactured by hand. The word "uilleann" is Irish Gaelic for "elbow." Unlike most other variations of bagpipes, the Uilleann Pipes are inflated by means of a bellows, operated by the elbow of one arm with the bag being held under the other arm. The chanter is the main melody instrument and has a range of two octaves. The drones, of which there are usually three -- base, baritone and tenor -- when turned on, supply a continuous 'drone' accompaniment to the melody. The regulators are keyed chanters, usually three on a full set, which are operated by the musician when various chords as accompaniment are required