Curious. I'm playing Smoke on the Water quite a bit at the moment, with the GT backing track. In the lesson for the solo, Dave says that the solo is mostly in G minor, with a bit of C dorian, 'and this works great because C dorian is a mode of G minor.'

So, what I want to know is:

* Does the above statement just mean that the G minor scale has the same notes as the C dorian scale (but with a different starting note?)

* If yes, why can't we just say that the whole thing is in G minor?