Great response and well explained, as always, Richard. Good point with the near obsessiveness of the printed sources of music from the 18th Century onward. I have always felt that when you combined the British Army's detail orientation with the Scot's orderliness and rules adherence, you would get what you commented about in pipe music. The ceol mhor (or piobaireachd), even more so. There are so many "unwritten" rules and a certain pedantic nature of those who oversee that part of the piping world, it can get a wee bit ossified. I'll get off my soapbox now. Thanks for the excellent response and examples, Richard.

JMB