Vienna，both the capital city of Austria and the centre ofclassical music．is a beautiful old city on the River Danube．In the eighteenth century,lots ofcame to study and work there．Among them，three composersJohann Strauss(the father and the son)and Mozart were very famous．Mozart could play the piano and the violin before six．His familyhim around Europe to give concerts and he wroteof pieces of music．