Frank Peter Zimmermann graces the cover of our special German issue, with articles on the Klotz violin making dynasty and modern-day luthier Stefan-Peter Greiner. Auction house directors give their top tips on buying instruments at auction, and Augustin Hadelich discusses Tchaikovsky’s Violin Concerto. Plus, the favourite encores of Leonidas Kavakos, Hilary Hahn, Arabella Steinbacher and more.