Training FAQs for Singer Applications How do applicants from non EEA countries get a visa to come the audition? The National Opera Studio does not handle visa applications. However, if you are applying for a visa to come to an audition in person, we can provide a Letter of Invitation to support your visa application. This letter will also be provided for EU citizens following the United Kingdom’s withdrawal from the European Union, should this be necessary. Please email [email protected] if you need a Letter of Invitation.