Honestly I think I just got lucky. I'm not sure what the paper consists of (I suspect it's cellulose, not rag) or if it's even acid free. It worked right out of the book without any prep (aside from trimming to size). I'm definitely wondering if I can do vandyke on it. Cyanotype doesn't really seem horribly fussy, but vandyke can be really sensitive as far as paper selection goes.
Fantastic! I can imagine some interesting correlations/juxtapositions between the music and image subject materials. (if you want to get all artsy-fartsy about it. )