The Bean Sidhe or Banshee makes her appearance when someone in the household is about to die. She haunts only the families of the "high Milesian race" - those whose names have an "O", "Mac" or other prefix. One exception to this rule has been granted by virtue of the Irish poets who have given her to some of the Norman-Irish families - the FitzGerald's for example. In any event, she heralds the demise of only those who are of authentic noble stock and it is with great dread when her piercing "caoine" or keening is heard. In many respects, this mysterious creature resembles traditional Irish keeners or mourners of old; as with her mortal counterparts, those who have seen her describe her as drawing a comb through her hair, similar to tearing the hair out in anguish, which the ancient mourners used to do. Incidentally, or maybe not, while the Banshee is considered benign, she supposedly has a sister force who isn't; this force is called the Lianhan Sidhe and her sole purpose is to seek the love of mortal men. Their desire for her ultimately destroys them.Henry Cowell performs in this 1933 Folkways recording.
A quick warning to anyone performing this work: do NOT clean the piano strings beforehand. Dust and dirt on the piano strings increases friction and helps to create a much bigger sound. Clean off the piano wire gunk and you'll lose over half of your sound in the piece.