Who says a classical music audience can only prick up their ears and clap their hands? In any case, Patricia Kopatchinskaja doesn’t: the eternal tomboy among the violin stars is inviting guests to join in in the Great Concert Hall on Monday. Before you know it, you’re already assigned to one of four canon groups and receive final instructions from the soloist: “I’ll give you the cues – if it goes well, the orchestra will play too.” Things then go like clockwork: Contrary to their image, the Viennese audience goes all out vocally – and through the roof in terms of mood.