The modern orchestral horn had as its ancestor the valveless 'natural' horn that was used in the military and in hunting to signal the troops or hunters. The valveless horn has a limited range as changes in pitch can only be produced by lip pressure and inserting or removing the hand from the bell of the instrument. Inserting the hand in the bell of the instrument to change pitch was somewhat of a compromise as the tone quality of the instrument changed.
Frida Kahlo
croisiere turquie
Theodore Roosevelt
Robert Delaunay
Fernnand Leger
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