Key (instrument) Key (instrument) A key is a specific part of a musical instrument. The purpose and function of the part in question depends on the instrument. On instruments equipped with tuning machines, violins and guitars, for example, a key is part of a tuning machine. It is a worm gear with a key shaped end used to turn a cog, which, in turn, is attached to a post which winds the string. The key is used to make pitch adjustments to a string. With other instruments, zithers and drums, for example, a key is essentially a small wrench used to turn
Musical instrument the development of kettle drums in Mesopotamia that spread as far as Java. Various lutes, zithers, dulcimers, and harps spread as far as Madagascar to the south and modern-day Sulawesi to the east. Despite the influences of Greece and Rome, most musical instruments in Europe during the Middles Ages came from Asia. The lyre is the only musical instrument that may have been invented in Europe until this period. Stringed instruments were prominent in Middle Age Europe. The central and northern regions used mainly lutes, stringed instruments with necks, while the southern region used lyres, which featured a two-armed body