The title ‘Pennillion’ comes from the Welsh custom of singing improvised verses on a given theme to a melody either well-known or learnt from the harper. Here the original folk-like theme is stated at the beginning and end and there are six variations in between. It was composed for the violinist Jack Rothstein and harpist Annabelle Etkind who first performed at a Jewish charity banquet in Grosvenor Square London in June 1975.