Accidental (music)

Vydavateľstvo: Alphascript Publishing
Formát: Paperback
Jazyk:
ISBN: 9786130214388

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O knihe

In music, an accidental is a note whose pitch (or pitch class) is not a member of a scale or mode indicated by the most recently applied key signature. In musical notation, the symbols used to mark such notes, sharps (¿), flats (¿), and naturals (¿), may also be called accidentals. An accidental sign raises or lowers the following note from its normal pitch, usually by a semitone, although microtonal music may use "fractional" accidental signs, and one occasionally sees double sharps or flats, which raise or lower the indicated note by a whole tone (though their most common usage is in keys in which the altered note is already raised or lowered by the key signature, so the altered note is only a half step from its usual pitch in that key). Accidentals apply within the measure and octave in which they appear, unless canceled by another accidental sign, or tied into a following measure. The modern accidental signs derive from the round and square small letter b used in Gregorian chant manuscripts to signify the two pitches of B, the only note that could be altered. The round b became the flat sign, while the square b diverged into the sharp and natural signs.