Let us not forget Peter Schickele's Concerto for Horn and Hadart (S.27)Bb.

Here is a note on the hardart.

A Hardart has a range of over two almost chromatic octaves, with each successive tone possessing a different quality of sound, including a plucked string, bottles which are blown and struck, a bicycle horn, various whistles and a cooking timer. Due to its length - over nine feet - and the great variety of motions necessary to produce its tones, the hardart requires its player to be athletic as well as musical!

D