"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."

ONCE we are OUT of the EU - We are not yet OUT of the EU - Now go back and read the opening post of this thread and the title of the link provided:

UK bands NOW have to pay import duty and VAT on ALL merchandise before even entering Europe to tour

Ever tried getting into Canada, USA or Australia? Lots of hoops to jump through, but loads of artists, bands and performers do it - the rewards being well worth the effort. So when we leave the EU you just add the countries of Europe to that list. Beatles toured and worked in Europe long before we joined the EEC - where did they make their money though? Wasn't Europe, from 1964 to 1970, the Beatles had the top-selling US single one week out of every six weeks, and the top-selling US album one week out of every three weeks.