English to Norwegian Art/Literary Slang Slang, archaic, common speech

I am actually looking for a word that describes a performace of an artist who doesn't really perform for art's sake, but only for money, so that the performance is very poor, and it often takes place in a place of low quality of service (like playing in bars for easy money). In painting you can call the kind of perfomance "smøreri", but what do you call it generally speaking of all the forms of art?
The word should not be entirelly slang, because I'm translating an article by a professor in bioethics and he uses very florid language.