many years ago, when I first moved here to the 'big city', I got several chances to see Joe & Antoinette McKenna...she on harp and he with Uillean pipes...I would go sit in the front center just to be able to watch Joe's hands and arms etc. as he played!! And Joe is one of the few Uillean piper who really' played 'seriously' on the 'registers' (as I think the wrist keys are called). I really love the feeling & sound that comes from that instrument!