I tend to agree with you Malcolm, but,whatever ones opinion as to the merits of the practice, there is a tradition of setting words to classic airs, and Da Slockit Light is an ideal candidate for the treatment. So don't be too surprised if you are indicted at some time in the future ! Many of O'Carolan's tunes have been done, Planxty Irwin springs to mind as one which survived the process. Lokewise "The Dawning of the Day" predated Patrick Kavanagh's "Raglan Road" by centuries, before Like Kelly combined them. If it is done with taste, I dont think it is necessarily detrimental to ther melody.