Kaiser-Walzer, op. 437

Kaiser-Walzer, Op. 437 (Emperor Waltz) is a waltz composed by Johann Strauss II in 1889. The waltz was originally titled Hand in Hand and was intended as a toast made in August of that year by Emperor of Austria Franz Joseph I on the occasion of his visit to the German Emperor Wilhelm II where it was symbolic as a 'toast of friendship' extended by Austria-Hungary to the German Empire. Strauss' publisher, Fritz Simrock, suggested the title Kaiser-Walzer, since the title could allude to either monarch. The waltz was first performed in Berlin on 21 October 1889.