You want to see astounding music from young performers? Just go to any Fleadh Cheol. I went to the English Fleadh in Nottingham several years ago, and was astonished to see dozens of under 18's - some under 8's! - playing traditional music of the highest quality. A particular memory is of a 15 or so year old old girl in full Goth apparel - leathers, virulent red hair, piercings etc - leading an under 18 Ceilidh band in rehearsal on some grass, fiddle in hand, utterly lost in the music and on getting it right!
Us old ones really have to keep encouraging youngsters to enjoy traditional music, it's often so much more accessible than today's manufactured pop - and the young ones so often agree with me - and with work and a little money (how much does a penny whistle cost?) they can get and give so much enjoyment.