Given all that—and the fact that the Royal National Scottish Orchestra will play at the St Magnus festival in Orkney just before this year’s Edinburgh international festival opens—the Parliament should certainly be reassured of the reach and range of our companies across Scotland.As for the companies’ international profile, Alan Cumming will star in the NTS’s new version of “Macbeth”; “Black Watch” will be back in the US, with performances in Washington, Chicago, Seattle and San...