00,

That is the approach that was proffered in the Berklee class in the 2nd week.

Now, the class is in it's 4th week, and Gary introduces something not too far afield from where my brain is already living - something he is calling 'common scale'.

Where the various chordal scales that work for different chords, are actually using the same exact notes. The fact that A Dorian is C Ionian (or what many just think of as the C-major scale). It's also Aeolian for something, but I can't recall which, if I'm not mistaken. Maybe Em?

I've kind of recognized these types of relationships by practice, without knowing the names and technical terminology. BTW I doubled the synth lead that I made for 500 Miles High to give it a little more depth. Here's the soundcloud link: https://soundcloud.com/rockstar_not/500-miles-high-scott-lake