A set of five, equidistant, horizontal lines joined together by a brace. The staff (also called stave) is used to clearly communicate musical notation. Note symbols, dynamics, and other performance directions are placed within, above, and below the staff. Indicates the set of lines used for the notation of notes of different pitches. the five-line stave is in general use, with a four-line stave used for plainchant. Staves of other numbers of lines were once used. the system, with colored lines for c and for f, followed principles suggested first by Guido of Arezzo in the 11th century. Staff notation is the system of notation that uses the stave.<br><br>A group of five horizontal lines on which music is written