Anna Patalong, performing at Royal Albert Hall, says free movement 'essential' for musicians An opera singer who was asked to change her EU-themed dress for a concert at the Royal Albert Hall, in London, has described her choice of attire as a "subtle nod" to Europe at a time when she and other musicians fear for their livelihoods. The British soprano Anna Patalong donned the yellow-and-blue outfit, along with a neck…