Great point! Zep is easier.
Actually, great point about the lesson your band director gave you. So much depends on the other instruments (what they
are playing) along with what chords are both before and after the specific chord in question.
Sometimes I think guitar players are always playing in a power trio in their heads.
I remember grabbing this book because it was mentioned in a guitar magazine, and not knowing
what the f**k to make of it. I think I ordered it out of the back of one of those magazines.