On 3 March 1989, the Presidency of Yugoslavia imposed special measures assigning responsibility for public security to the federal government.
In 1989, during a concert on the Incognito tournée, she injured her voice. She consulted the otorhinolaryngologist William Gould,who gave her an ultimatum: have immediate surgery on her vocal cords or do not utilize them at all for three weeks. Dion chose the latter and underwent vocal training with William Riley.