"McKinnon's Brook", also known as "MacKinnon's Brook" or "MacKinnon’s Rant", is a Scottish strathspey in 4/4 time and A dorian mode. My only recorded source so far is the recording by Ensemble Galilei on Music in the Great Hall. There are three settings on thesession.org, two for fiddle and one for pipes. This is the first of those settings and agrees with the recording by Ensemble Galilei. I haven't found any other source for this tune.