Heckel-clarina

The heckel-clarina, also known as clarina or patent clarina, is a very rare woodwind instrument, invented and manufactured by Wilhelm Heckel in Wiesbaden-Biebrich, Germany. Heckel received a patent for the instrument on 8 December 1889. It was apparently intended to be used for the shepherd’s pipe solo in Act III of Wagner's Tristan und Isolde. It was used beginning in 1891 at the Festspielhaus, Bayreuth as a substitute for Wagner's Holztrompete; the clarina was found more practical and more effective in producing the desired tone-colour.

The heckel-clarina is a single reed, conical bore instrument made of metal, resembling a soprano saxophone.