Vienna，both the capital city of Austria and the centre of{#blank#}1{#/blank#}classical music．is a beautiful old city on the River Danube．In the eighteenth century,lots of{#blank#}2{#/blank#}came to study and work there．Among them，three composers{#blank#}3{#/blank#}Johann Strauss(the father and the son)and Mozart were very famous．Mozart could play the piano and the violin before six．His family{#blank#}4{#/blank#}him around Europe to give concerts and he wrote{#blank#}5{#/blank#}of pieces of music．