The back cover of Heldon IV, a reissue of an obscure French album I picked up a couple of months ago, features a musical diagram on the back cover, showing, I guess, how the tape decks were connected to enable the Frippertronics-like effects at the core of the album. I am terrible at reading diagrams (as is also the case with maps, IKEA instructions, etc), but I’m fascinated by them. As someone who often listens to music and tries to figure out the “way in” on the sounds an artist is producing, the rare diagrams (or are they called schematics?) that I come across offer what would seem to be easy access to tricks of the trade…provided I could ever make sense of a diagram, schematic, or map.
I sense this Heldon album is not the only one featuring a diagram or schematic on the cover. Can you cite more than even 3 other examples of this phenomenon?