The fairies were seen and heard by many persons in that neighbourhood, and sometimes by several persons together. They appeared more often by night than by day, and in the morning and evening more often than about noon. Many heard their music, and said of it that it was low and pleasant; but that it had this peculiarity: no one could ever learn the tune. In more favoured parts of the Principality, the words of the song were distinctly heard, and under the name of the 'Cân y Tylwyth Teg' are preserved as follows: