What technique is used to add a wider range to the horn?

The technique of hand-stopping is used to add a wider range to the horn. This method involves placing the hand inside the bell of the horn, altering its pitch and timbre. By adjusting the position and shape of the hand, a player can effectively control the pitch, allowing for a greater variety of notes and colors. This is especially useful for accessing notes that may otherwise be difficult to achieve, as well as producing specific tonal qualities.

Hand-stopping not only expands the horn’s range but also enables more expressive playing by allowing the performer to manipulate the sound. This technique is a distinctive feature of horn playing, as it utilizes the instrument's unique design to its fullest potential.