"The Fairies’ Hornpipe" (Gaelic: "Crannciuil Na Siabraead/Sideog") is an Irish, Hornpipe in G, also known as "An Leanbh Sidhe" and "The Faeries’".
Piper Seamus Ennis introduced the tune with a tale of a young man who learned the tune from a fairy piper. The tune is derived not from the shee, but rather from a duple-time air collected in the mid-19th century by Cork musicologist P.W. Joyce called "Mór Chluana" (More of Cloyne). There is a connection with fairies, however, since Mor was goddess of the fairy-folk around Cloyne, County Cork.
It was printed in O'Neill's Music of Ireland: 1850 Melodies (1903), O'Neill's Dance Music of Ireland: 1001 Gems (1907).
It was recorded by Seamus Ennis, Clannad, Mick Moloney, James Keane, The Chieftains and others. Mick Moloney plays it in a medley with "Alexander's Hornpipe".