They are usually danced in "squares" or "longways",
generally in sets of four couples.
The use of French expressions in Scottish country dancing such as
"poussette", "dos à dos", "pas de basque" prove that
close relations existed between France and Scotland as early as the
15th century.
Scottish country dances are danced worldwide, and the RSCDS (Royal
Scottish Country Dance Society) has recognised more than 500 groups (22 in France).
Please click on the links below for examples of reel, jig and strathspey :
Reel : https://www.youtube.com/watch?v=CZGPC1guhW0
Jig : https://www.youtube.com/watch?v=H2OkGr90zTc
Strathspey : https://www.youtube.com/watch?v=9sBq6mOWA9Y
Scottish Country Dancing Dictionnary