"Heimliche Aufforderung", Op. 27, No. 3, is one of a set of four songs composed for voice and piano by Richard Strauss in 1894. The German conductor Robert Heger orchestrated it in 1929. The text is f
Lovers, by Pierre-Auguste Renoir, 1875
A natural horn has no valves, but can be tuned to a different key by inserting different tubing, as during a rest period.