Staff (music) - Wikipedia
https://en.wikipedia.org/wiki/Staff_(music)
In Western musical notation, the staff (US) or stave (UK) (plural for either: staves) is a set of five horizontal lines and four spaces that each represent a different musical pitch or in the case of a percussion staff, different percussion instruments.Appropriate music symbols, depending on the intended effect, are placed on the staff according to their corresponding pitch or function.
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