Regarding key changes, traditionally in Cape Breton – in a march, strathspey, reel medley- you only change keys once you get to the reels- if you change keys at all. More often than not, you don’t hear any key changes in a medley except for in the same tonal center. Like going from A major to A minor- that is very common.
You may hear key changes in a jig medley, but again, there is no transitioning to other tune types. You traditionally only hear jigs with jigs, not with any other type of tune.
So basically, key changes do not traditionally occur when transitioning to other types of tunes
Kimberley Fraser – email 4/8/2011