Nice and curious!!! I'm doing something similar within the graphic diaries context with a little Parfois catalogue!!!!
by the way, this cultural agendas are not bad, but had been much better once. At least from 1996 until final of 2010. Like it's theatre posters. I have dozens of them on paper and hundreds on hq digital files.
hahah parfois catalogue seems great ! I was surprised by the quality of the catalogue, the text's are really good too, unfortunately i'm not in porto to see the shows !