I know this is a sub-set of the Synthetic Scale Thread, but I'm looking at a specific sub-set: Two-Octave Scales. What prompted this was my recent dive into 5ths-based tuning (specifically Tripp's NST). What I noticed that playing four sequential frets in one position covers two octaves in four strings: Code: 0 7 14 21 1 8 15 22 2 9 16 23 3 10 17 24 I've started some trial and error (e.g. standard tuning minor pentatonic pattern on a NST guitar), but I'd like a bit more "understanding" -- I'm not good with trial and error stuff. I found some stuff by Colette Mourey, but all the "texts" are in French, and I haven't had a chance to digest the scores I've found. One thing I have noticed is that everything I've tried has a 3rd/4th every third note or so. I can reduce that to a whole or whole-half by sliding down a fret or two every time I move up a string: Code: 20 21 15 22 16 23 10 17 24 11 18 5 XX 19 6 13 0 7 14 1 8 2 9 3 I haven't played around with this yet, but then again, I'll be back in trial and error land.