Don: When I posted last, I understood that you are asking on behalf of your friend. I addressed you only because you started the thread (and because I don't know her name!)! The reason I mentioned the art-history stuff is that it was not clear to me whether your friend's photo "essay" was an independent effort or a school assignment. If it's the latter, I wouldn't want to see the grade for her project affected negatively by the inclusion of songs about painters who aren't technically Impressionists. (Or, if it's for a museum exhibit, I wouldn't want to see her exhibit criticized or condemned by any snooty art critics because of those songs). That's all!

On the other hand, if her photo essay is her own project for her own purposes where art-historical accuracy will not be an issue, and she wants songs about Van Gogh and Cézanne as a part of that project, then more power to her!!