A mandolin string is a type of musical string specifically designed for the mandolin, a stringed instrument known for its bright, resonant sound. Typically made from materials like nylon, steel, or a combination of both, these strings come in different gauges, affecting their tension and tone. Mandolin strings are usually arranged in pairs, called courses, with each course tuned to the same pitch. The standard tuning for a mandolin is G, D, A, and E, from lowest to highest pitch. Proper string maintenance is essential for achieving the best sound quality and playability.