The “King of the Waltz” will perform with his Johann Strauss orchestra Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Classical music fans can now experience a river cruise and concert with “King of the Waltz” conductor and violinist André Rieu. Amadeus River Cruises has