So basically, if there's a music licence, you don't have to obey any of the restrictions imposed apart from the limit on numbers of people in the room, and it's over by midnight, and the ban on amplification. What restrictions and conditions are they talking about? I can't actually think of any.

Or is it that, if a pub or whatever has got a licence covering other types of live music, and it decides to allow some people to have a session, they don't have to go back and get the licence varied to cover that? My God, that's a pretty generous concession.

Meanwhile in any place in England or Wales which is open to the public which doesn't have a music licence, you are breaking the law if you do anything which could be described as a musical performance, unless you have a friendly Morris Dancer in tow. Unless the place is registered as a place of worship.