As children , Paul Rosbaud and his brother Hans performed with their mother , who taught piano . Paul Rosbaud and his brother Hans appeared as children with their mother , who taught the piano .
Sebagai kanak-kanak, Paul Rosbaud dan abangnya Hans membuat persembahan bersama ibu mereka, yang mengajar piano. Paul Rosbaud dan abangnya Hans muncul sebagai anak-anak dengan ibu mereka, yang mengajar piano.