I know this is a long shot, but I thought I'd throw it out there, just in case, ya know?
I asked DS (who will be in 7th next year) what he'd like to learn for Music next year. After some thought he told me he'd like to learn about 60's, 70's and 80s music. (I've gotten him hooked on the local Oldies channel LOL.)
Obviously, I can make my own thing, come up with whatever, BUT I thought I'd throw this out there, just to see if anyone happens to know of anything offhand - books or curriculum - (or even has some fabulous ideas) to help teach something like this.