Observer, the free movement (of labour) as you quite rightly say allows people to move around within the EU provided they have a job to go to. However, as cannot have failed to escape your notice, following Brexit we will not be in the EU. British musicians entering the EU will be subject to whatever immigration and customs controls are put in place, and the same will apply to EU musicians coming here. At present we are being told this will require visas, carnets and musical instrument certificates.

The purpose of the Single Market is to remove such restrictions. The vote to leave the EU was a vote to restore them between the EU and the UK. Of course we were promised that we would get a new agreement which would avoid this and which would give us all the benefits with none of the obligations, but that was always a naive hope. And it is to be expected that the EU will have tried to shaft us - their aim is protect the EU's interests, not those of the UK. They were never going to give us an easy ride, and why should they?