This is a great little trick you should know. Play a minor7b5 arpeggio, one and a half whole-steps below the minor chord you are playing over, and you get the Dorian sound. That's 3 frets. Pretty cool?
To do the same over an A minor chord, play the F#m7b5 arpeggio. To play over a D minor chord, play Bm7b5 - do you get the idea?
hthttps://youtu.be/QHPt81muP0w
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