bitflipper
Just as bapu only plays in Am, I only improvise in Dorian mode. Blues scale - bah. That's for poseurs and jazz organists. If I don't get a cramp in my wrist by the end of the night, I've been slacking.
When I am using the "blues" scale I actually base it on Dorian more than Aeolian (nat minor). The major VI is useful bluesy color. Then I can occasionally flop over to Aeolian (minor VI) to twist things up a bit (more of a "Little Wing" feel). Dropping into mixolydian/mixo-blues to access the major III takes it into "happy" mode but remains bluesy.
Doing any of that breaks the key. So all those modes happen with the same root (eg: A Dorian, A Aeolian, A Mixo).
For metal I'll use that type of key bending action except with Aeolian, Phrygian, Locrian, Harmonic minor (I) and the dominant scale of Harm minor (V).
codamedia
+1
Modes used to make my head spin .... I could never understand them and thought they were just another set of scales I had to learn.... UNTIL someone explained them the way you do above. That happened about 25 - 30 years ago and I still consider it the biggest hurdle I have ever crossed. All music made sense to me after I wrapped my head around that.
Same here except I mapped it out myself on graph paper because I could see some kind of pattern emerging on the fretboard but it was incomplete. Pulled out the graph paper, mapped out what I knew then filled in the rest using my scale books as reference.
Once I saw it in it's entirety it sure was a serious forehead slapping moment... especially after 15 years of grunting it out the hard way. lulz...