How is the right hand positioned in the hand-horn technique for the French horn?

In the hand-horn technique for playing the French horn, the correct method involves placing the hand inside the bell of the instrument. This position is crucial because it helps to control the pitch and timbre of the sound produced. When the hand is inserted into the bell, it acts as a mute, altering the resonance and projection of the notes being played. This technique allows players to achieve a softer, more mellow sound and assists in executing certain articulations and dynamics effectively.

The other positioning options would not work for the intended sound production on the French horn. Keeping the hand flat or raised above the bell does not offer the necessary control over the sound, while positioning the hand in a fist does not facilitate the required flexibility and adjustments needed to manipulate the sound quality. Therefore, placing the hand inside the bell is the established and effective technique utilized by horn players.