Imagine they applied these kind of rules to spoken communication. It would be illegal to talk in any public place without a licence; but with an exemption so that no more than two people in a bar could talk in an evening. (And talking in church would be OK too.)
And once people started to say (in writing of course, since they wouldn't be allowed to say it out loud) that a two-in-a-bar rule like that was absurd, the kind government would change it so that no-one could talk in a bar, unless the landlord had applied for a talking licence along with his drinks licence, indicating how many people would be wishing to talk in an evening, and what kind of things they might be saying.
And then there'd be a suggestion that maybe spontaneous talking might be allowed, so long as not too many people listened to it, because that would mean it was a performance, and would need a licence.
It really isn't any more ridiculous than the situation we've got ourselves into. And I'm sure that in fact restrictions on our right to communicate in song and music are in breach of the human rights which are now protected by law, and are completely illegal. If it ever got to a court that took such matters into consideration.