Instruct: Classify Amazon reviews into positive or negative sentiment
Query: My favorite operetta

Between Carlos Kleiber's conducting, and Otto Scheil's direction, the entire operetta is delightful. The cast from Eberhard Wachter, to Franz Muxender's Fosch, everyone acts. They don't just face the conductor and posture each aria. They sing and dance and act. Of course Johann Strauss's music is ideal. This production is simply fun.