Gaohu is a musical instrument, which is the abbreviation of "high-pitched erhu". Its shape, structure, bowing technique and technique, as well as the playing symbols used, are all the same as those of erhu, except that the qin barrel (sound box) is slightly smaller than that of erhu. The legs are played with a part of the violin tube in between.

musical skills:

1. Gaohu's main performance skills: Right-hand bowing is often used for split bows, fast bowing is often used, and when strong beats are played, the bow is often used. The left fingering method mainly includes various glissando and free pad fingering and flower in the melody. The traditional playing method of Cantonese music does not use the strings in the left hand, but uses the pressed strings and the open string tremolo.

2. When playing gaohu, the player's legs tighten the qin barrel to control the volume and reduce noise. The timbre of the gaohu is crisp and bright. It was originally used to accompany Cantonese opera and play Cantonese ditty, as well as ensemble and solo. In modern large-scale folk bands, the gaohudo is used as a high musical instrument.

3. When playing, generally use both knees to hold the piano barrel to help eliminate noise. If a bamboo sound cover is installed under the bridge, a thick woolen "control pad" is placed in the cover, and a soft wood block is installed about one-third of the way below the rear opening, and good sound quality can also be obtained. Gaohu is good at playing lyrical, lively and gorgeous tunes. It is the main instrument to play Cantonese music, Chaozhou music and accompany Cantonese opera and Teochew opera. It is a high-pitched stringed instrument in a national band, especially suitable for playing decorative cadenza. Solo pieces created in modern times include "Double Voice Hate", "Rain Beats Plantains", "Birds Throwing in the Forest", "Pinghu Autumn Moon" and so on. Solo pieces composed after the founding of the People's Republic of China include "Love on the Pearl River", "Evening Wishes", "Hometown Scenes", "Spring to the Fields" and so on.