Thanks for the info; I've checked now, and "Tarry Trousers 3" is a quite different tune.  So I'll add:

AS I ROVED OUT filename[ ASIROVED  Planxty version; they learnt it from Paddy Tunney, but seem to have made changes in the melody as noted in Tunney's book, The Stone Fiddle.  I've made a midi from that, modified to reflect the changes made by Planxty.