Great! That's exactly the way I improvise, but for many years didn't realize it was a "scale". As long as you don't stray too far from the basic notes of the chord, or scale, almost anything you play works. Don't get me wrong, of course I will never reach his level of expertise!
The same thing works regardless of the genre, when you adapt it as far as speed and riff selection. If you know the chords, you can "jam" to any song.
Very helpful Donny.
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DonM