A lot of this, as you may discern, might be slightly above my pay grade. I have been studying on my own a few of the chord families that I stumbled into, not knowing (at the time of stumble-ment) that these things have been widely used, have names and a wide array of grips and use, either on their own or as substitutes or passing chords. I started with the minor7thb5 chords and I’m currently working on the diminished 7th chords. From time to time, I pull out Ted Greene’s Chord Chemistry book to see if there are alternate grips that would better serve whatever it is that I happen to be working on. And that’s when I come across these 6-fret spanning grips and I’m thinking...really? Sure, there may be those amongst you who can say, yeah, no big deal, I was throwing down with that when I was 12, but, huh. Not happening here, although I did think, hey maybe you could use part of that grip. Just for grins: But I’m pretty sure Mr. Greene had a sense of humor, too: ...invisible chord?