I'm not sure why the link to the later 1969, radio series has been put on here. The original 1962 BBC TV series on which it is based has been wiped. The tune was before the TV series titled Dr. Mackay's Farewell to Creagorry before becoming the Dark Island in 1962, and another title is also recorded in a 1967 letter I have from the College of Piping (sent to the MCPS), 'Dr. McInnes's Farewell to South Uist'. Otherwise not much more can be added to this - as it's all been covered in previous screes of discussion.