I've been experimenting with an approach to improvising over minor two-five-one progressions.
There are a handful of common approaches to this progression. Which I'll list here when I have time…
Bebop scales are eight (as opposed to seven) note scales which place chord-tones on the beat. See Wikipedia for background.
Bebop scale approach to minor two-five cadences
I was searching for something that would feel familiar to me. I like the symmetry of the eight-note bebop scales that place chord tones on the downbeats. I also like repetitive patterns when I'm practicing new things.
Which of the bebop scales would work well over minor two-fives? Let's look at the chords and scales I've selected in F minor. These are just some of the possibile scales we could apply. They are the ones I am working with. (Let me know what you think about them!)
A possible scale choice is the dominant bebop scale constructed from the note that is a major third below (or a minor sixth above) the root of our ii-7b5 chord. For G, this would be the Eb dominant bebop scale. Playing Eb mixolydian but beginning on it's third gives us a scale that fits over G-7b5.