Quote Originally Posted by captdg View Post
What would be an example of a chord with imperfect Consonance? When is major third tuning used?
Any chord, major or minor, is considered by some imperfect consonance. Thirds and sixths are called that by some people. I refrain from using that terminology because it implies absolutes, something I do not believe accurately describes intervals. It's more like black, white and a whole lot of grey in between.

As for major third tuning, I am not sure I follow...