I picked this information up from FW1 — and it is definitely a “light-bulb” moment in my music theory. I started playing piano at age 8 and had “theory” lessons with it as I progressed. By age 17, I could play lots of things, but I still had major deficiencies in theory, so I started with a new teacher with the understanding that I would get lots of theory and no more recitals. Needless to say, it was the same old drill — lots of memorization for a recital and no theory, so I quit.I started TAC in the fall of 2020 at age 69 — a total newbie on the guitar, and I can honestly say that I have learned more theory in TAC than I ever expected and learning about the major scale pattern finally made all the different major scales make sense to me. I was like Tony — trying to memorize all the different scales — and it never did “stick,” so the information here is of a solid foundation for understanding the “why” of all the major scales have the flats and sharps that they do.