Husli is an ancient Russian string musical instrument, the name of which comes from the Old Slavic word "to hum." The construction of husli is quite simple: a wooden body with stretched strings. Inside, like all string instruments, there is a resonating box to amplify the sound. The best material for making the body has always been considered to be wood from coniferous species, such as cedar, spruce, or pine. Before the advent of iron, the strings were made from sinews or horsehair.

There are several types of husli. Helm-shaped husli have a semicircular form and resemble a helmet. Wing-shaped husli have a trapezoidal shape, and their strings resemble a bird's wing. Lyre-shaped husli have an elongated form and somewhat resemble a balalaika or guitar.

Husli are played standing or sitting, depending on their variety. Due to the simplicity of the design and ease of play, this instrument was widely known and spread throughout Rus. Its popularity is confirmed by mentions in ancient epics, where legendary heroes such as Dobrynya Nikitich, Solovey Budimirovich, Sadko, and others played husli. Husli were used as accompaniment for storytelling or singing, as well as for performing dances, tunes, chastushkas, in worship services, and for singing spiritual verses.

The church's attitude towards husli was ambiguous. According to some sources, it was the official and even the only instrument used in the clergy. Other sources claim that husli were banned and attempts were made to eradicate them. It is also known that in the early 20th century, keyboard-shaped husli with a piano tuning were used in the clergy, which had keys alongside the strings.

Today, interest in this folk instrument remains. There are many modern performers and craftsmen who know the secrets of its making. Husli are used in Russian folk orchestras and in music therapy, as it is believed that their sound has a beneficial effect on human health.