Strings are fundamental components in a wide range of musical instruments, including guitars, violins, cellos, and pianos. They are typically made from materials like nylon, steel, or gut, with different thicknesses and tensions affecting the instrument's sound and playability. When plucked, bowed, or struck, strings vibrate to produce sound waves, creating musical tones. The pitch of a string is determined by its length, tension, and mass, allowing musicians to manipulate these factors for different notes. String instruments often use various playing techniques, such as pizzicato or legato, to create diverse expressions and dynamics, making them versatile across musical genres.