Composed by Peter Milne. The version I’m including here is pretty close to that played by Alasdair Fraser on Legacy of the Scottish Fiddle. I’ve also heard it played single, without repeats.
I think this is called "Gillian’s" reel rather than "Gillan’s".
DonaldK, it’s often mistakenly called "Gillian’s Reel", but it is in fact properly known as "Gillan’s Reel". Attributed to Peter Milne, an alternative name is "The Muir o’ Gellan’s Reel" - which further suggests it is a Milne composition, for as a boy he lived near, and worked as a herd on, the Muir o’ Gellan (Aberdeenshire, Scotland); this would have been in the 1830s.
One of my favourites. I can’t remember where I picked it up, but I tend to play 5b as | agfa gfe=g |.
Interesting! I thought Gillan was a surname. Thanks Nigel!