Erhu is: "three points of fingering, seven points of bow strength", in order to play the erhu well, you must first master various skills of bowing. Today, when interpreting the erhu bow, master the methods and skills of "bow strength" and "bow speed" and some matters that should be paid attention to.
What is bow power? Bow force is the force with which the bow hair sticks to the string during the bow movement. This kind of string sticking force is often matched with the speed of the bow, which makes the erhu show changes in tone, color, thickness, hardness, softness, and virtuality when playing the erhu. Bow force contains two meanings:
<1> The heavy force of the bow force is the use of the natural weight of the right arm to act on the strings of the piano through the fingers. This method holds the bow looser, the veneer between the bow hair and the strings is larger, and the pronunciation is smooth and smooth. Coherent and smooth.
<2> The bouncing force of the bow is the elastic force produced by the right arm through the lever action of the fingers holding the bow. This is a sudden action, the bow is held tightly, the contact points of the bow hair and the strings are concentrated, and the pronunciation is elastic. Full and vigorous.
Usually Shen Jin is suitable for lyrical slow passages, but in music, the two are used together.
<1> What is bow speed? Bow speed is the speed at which the bow travels during performance. Changes in bow speed often affect the volume and tone of the performance, as well as the priorities. The faster the bow speed, the louder the sound; the slower the bow speed, the quieter the sound. Use faster bow speeds for bright and full passages, slower bow speeds for soft and steady passages, gradually increase the bow speed in crescendos, gradually slow down in crescendos, etc. .
<2> The speed of the bow is usually proportional to the strength of the bow: when the bow strength is strong, it is combined with a fast bow, and when the bow strength is weak, it is combined with a slow bow. Conversely, the faster the speed of the bow, the greater the power of the bow, otherwise the sound will be empty; the slower the speed of the bow, the less power of the bow, or the noise will be produced.
The above are the methods and essentials of mastering the bow force and speed of the bow during performance. You can experience and master it gradually when you practice the bow.