The thin, taut strands of violin strings are stretched across the bridges of this instrument, connecting the pegs at the top of the neck to the base. But have you ever wondered what are violin strings made of?
Violinists spend a lot of time carefully selecting the right strings for their instrument and bow, as the string’s material will affect the sound produced.
Violin strings are usually made of steel core, gut, or other synthetic materials. All three materials produce a different sound, and each string type has a different timbre or tone color. Additionally, they have different feels affecting the bow grip and playing style. The choice of string material also affects the playing characteristics of the instrument.
A Brief History of Violin Strings
About three centuries ago, the first violin strings were made of gut (sheep’s intestine). This material was used because it had the ability to vibrate sympathetically with the sound produced by the instrument, giving the music a richer and more emotional quality. Of course, violins aren’t the only stringed instruments that use gut strings; you’ll also find them on lutes, harps, early pianos, and other bowed string instruments.
Usually referred to as catgut strings, these strings were made by drying and stretching the intestines of various animals (usually sheep). This then gives off the resonant quality that is so desired in a gut string.
Composition of Violin Strings: Why are They Important?
The composition of a string is important for two reasons: first, because the proportion of the different materials used will affect the sound that is produced; and second, because certain materials are more durable than others and won’t need to be replaced as often.
Violinists need to pay attention to the string’s weight, or gauge,. This is because a thicker string will vibrate more slowly than a thinner one and produce a lower note. Conversely, a thinner string vibrates more quickly and produces a higher note. The different gauges allow violinists to find the perfect balance for their instrument and playing style.
Types of Materials Used for Violin Strings Today
Whether beginner or virtuoso, all violinists need to know about the three main types of materials used for violin strings: steel core, gut, and synthetic.
Steel Core Strings
Also known as metal strings, steel core strings are the most popular type of string used today. Violinists like them because they’re durable, have a long life span, and are less likely to break during play.

Steel core strings are typically made of a steel core wrapped in a metal alloy. The most common metals used for the wrap are tin, copper, and silver. These materials give the string its characteristic bright sound. Additionally, these strings produce a more consistent tone than gut or synthetic strings.
Because of its vibrant resonance, volume capacity, and clear tone, jazz players, fiddlers, and country players often prefer steel core strings.
Gut Strings
As we mentioned before, gut strings were the first type of string used on violins. Though not as popular as they once were, gut strings are still used by some classical players because of the unique sound they produce.
For this particular type of string, you’ll come across various gauges. The thicker the string, the lower the pitch it will produce. Thicker gut strings also provide a more powerful tone.
While steel core strings have largely replaced gut strings in the world of violin playing, you’ll still find them on early music instruments like Baroque violins. This is because they produce a softer sound that is perfect for this type of music.
Synthetic or Composite Strings
Synthetic or composite strings are a newer invention, having only been around for about 50 years. Its first appearance was in the 1970s and is usually made from nylon, perlon, or similar synthetic materials. Beginners and student players often start with synthetic strings because these strings are more responsive than steel core strings.
Compared to gut strings, synthetic strings provide a warmer sound, and it doesn’t come with the high maintenance needed to keep gut strings in good condition. Its affordability is another reason why synthetic strings are popular among beginner players.
Choosing the Right Type of String for Your Instrument
Intermediate and professional players often gravitate towards gut or steel core strings because of the wider range of sounds they can produce. As mentioned earlier, beginners tend to use synthetic strings because of their affordability and responsiveness.
When it comes to choosing between the steel core and gut strings, it really boils down to personal preference. If you’re looking for a bright sound with more resonance, then steel core strings are the way to go. If you prefer a warmer sound and don’t mind the regular upkeep that comes with gut strings, then gut strings might work better for you.
The takeaway here is that there is no wrong choice when it comes to choosing the right type of string for your instrument. The most important thing is that you find a string that works best for your playing style and the type of music you want to produce.
Are Violin Strings Made of Horsehair?
You may have read or heard of it before, but some people believe that violin strings are made of horsehair. While the strings per se aren’t made of horse hair, the bow hair is!
The hair from the tail of a horse is used to make the bow hair because it has just the right amount of springiness. This quality allows the bow hair to grip the string and produce a clear sound. In addition, horsehair is also able to absorb rosin, which helps produce a smooth tone.
Each bow is composed of approximately 150-180 horsehairs. Each strand of hair is carefully selected, removing any imperfections that might affect the quality of sound produced. The number of hairs used will depend on the size of the bow and desired tension, and it may also significantly vary depending on the horse’s current diet and overall condition.

Once the horsehair is sorted, it is then tied onto the bow in a complicated knotting process. After the hair is knotted, it is trimmed to the desired length and shape.
Does this mean that horses were harmed in the making of your violin?
According to Michael Sowden, who’s been in the business for more than 40 years, hairs are obtained from dead horses – ones that have been hunted or died naturally. Other manufacturers cut the horse’s tail from a living animal – and won’t harm the horse in any manner.
Not all violin bows are made of horse hair, though. Like the violin strings, bows may also be made of synthetic materials like carbon fiber. This has been considered an alternative for vegans who play the violin, as well as for those who are allergic to horse hair.
What are Violin Strings Made Of? Final Thoughts
The history and science behind violin strings are truly fascinating. From its humble beginnings as a gut string to the development of synthetic and steel core strings, the evolution of violin strings is a testimony to the dedication and passion of those who have made it their life’s work to perfect this instrument.
The modern violinist has a wide variety of choices when it comes to strings, and the decision of which string to use is a personal one. However, understanding the materials that go into making a string can help you make an informed decision about which type of string is right for you. Gut and metal strings provide a different tone and feel, each having advantages and disadvantages. Synthetic core strings are a relatively new development and offer players the ability to find the perfect balance between gut and metal strings.