Would Immanuel Kant oppose alternative rock?
If we were to universalize the maxim "It is permissible to listen to alternative rock" then "alternative" rock would become mainstream, since everyone would listen to it. This of course creates a contradiction, implying we have a perfect duty not to listen to alternative rock.
(I'm not trying to be silly. I think I've wildly misinterpreted Kant, and I was wondering if you could clear it up.)
You might say that just because alt. rock was permitted, that doesn't mean everyone would listen to it. But if stealing was permitted, it doesn't logically follow that everyone would steal. (Same goes for lying.)