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
Rubab (instrument) is attached partway down the neck, similar to the fifth string of the American banjo. Rubab (instrument) Rubab, robab or rabab (, , , , "rubāb", Tajik and Uzbek "рубоб") is a lute-like musical instrument originating from central Afghanistan. The "rubab" is mainly used by Pashtun, Tajik, Turkish, Kashmiri, Baluch, Azerbaijani, and Iranian Kurdish classical musicians. Rubab is one of the national musical instruments of Afghanistan. It has "proliferated throughout West, Central, South and Southeast Asia." Rbab () is an Arabic word. According to the Arabic diacritics, vowels between consonants - apart from "Alif" (Aleph) are not written but articulates.