Awesome. Thanks... lots of good stuff here.
I think maybe I was a little unclear in my initial explanation. All of this stuff is good, but my real focus is really on books/comics/graphic novels/etc. that are specifically based on an album (i.e., where the music comes first, and then the book follows), rather than songs/albums that are based on pre-existing books or just general concept albums with a basic sketch of a story laid out in the liner notes. I actually didn't even think about the full scope of possibilities here, so I can definitely use all these different categories to form a bigger picture, but the stuff that's especially on point is anything where a band wrote an album (or even a song, or a series of albums), and then the music inspired some sort of tie-in book. Essentially what I'm planning on writing about is how bands are creatively using accompanying literature as a way to sort of enhance the overall artistic experience and as a way to encourage listeners to actually buy physical media instead of digital. But anything you can think of along the lines of what's already been said will be helpful, so keep them coming. Thanks!