The French horn is a brass instrument with a circularly wound tube. The funnel mouthpiece is characteristic of the horn; a narrow, conical length that ends in a wide bell with a diameter of about 30 cm. The playing position is usually with the right hand in the bell and the fingers of the left hand on the valves. The sound of the horn ranges from full and warm to strong and very bright, depending on the dynamics and position. It is quite homogeneous through all registers, only the lowest notes seem a bit duller and heavier. In forte it sounds comparatively less sharp and, due to the indirect sound emission and the funnel mouthpiece, a little quieter than a trumpet or trombone.