Violins that sound squeaky when played by novice violin players may be the result of a number of factors that may include:
1. The violin player may be placing too much pressure on the violin bow when playing on the violin. This will contribute to a squeaky or scratchy sound. The novice violin player needs to learn to control the weight of the violin bow arm in order to obtain a nice smooth sound on the violin strings, particularly the violin E string. The violin E string is the thin violin string found on the right side of the violin bridge. Novice violin players will find the violin E string to be more challenging to play than other violin strings such as the violin A string, violin D string or violin G string.
2. The violin player may be playing on low quality violin strings. Violin strings come in many grade and types and may be made from gut, nylon, steel, or may be wrapped with different metals including aluminum. Aluminum violin E strings tend to provide violin players with a sharp E string sound. Novice violin players will find these strings will present unpleasant sounds compared to other types of violin strings such as nylon violin strings.
3. The violin player may have a poorly haired violin bow, eg violin bows that are worn out and have only a small amount of horsehair found on a newly haired violin bow. The violin player will have difficulty obtaining a nice full tone with such a violin bow.
4. The violin player may have an oversized violin bridge on the violin. If the violin bridge is oversize or unfitted to properly meet the requirements of the violin then the violin strings will sit high above the violin fingerboard. This will create challenges for the novice violin player who attempts to play on these violins strings using fingers.