Fair enough, Linda, that's what makes the world go round! To be fair to K & A, most of the Youtube stuff is live performance from relatively recently when their voices have got a little shriller. Also Kate was very ill of a particularly horrible kind of total body cancer towards the end of her life. If you haven't heard it, try the "Go Leave" clip, it's about her break up with Louden Wainwright (she was Rufus's mother). If you have heard that, then I'm sorry to have gone on about it again!
All the best,
Peter