re: Art
Now that I can see as one possibility, though once again if they have truly alien minds, what we think of as art, music, culture, etc., they may not even be able to recognize as such, or care.
I want to think that we are unique even if every habitable place in the Cosmos has intelligent life, but I also have the feeling that this could limit us to a basic entry in the Encyclopedia Galactica for their record keepings (note I did not say "Mostly Harmless").