Octave Sign An octave sign (8ve__________|) shown over notes means to play or sing these notes an octave higher. When it is under notes, then play or sing the notes an octave lower.
Accidental any sharp, flat, or natural that is not given in the key signature. An accidental in front of a note applies as often as the note is repeated at that particular octave during the remainder of the bar it is in. In the bar that comes after accidental sharps or flats is usual to find 'warning' to contradict the accidentals in the previous bar.
All' 8va alta Play or sing an octave higher.
All' 8va bassa, all' 8va sotto An octave lower.
Diatonic the seven note scale with its octave. The steps of a diatonic scale are not all the same size. The distance between B and C, and between E and F, is half the size of the other steps.
Scale the ladder of sound from any note to its octave .
