SYMBOLS OF MUSIC DEFINED (_Continued_)
21. The _natural_[8] (sometimes called _cancel_) annuls the effect of
previous sharps, flats, double-sharps, and double-flats, within the
measure in which it occurs. After a double-sharp or double-flat the
combination of a natural with a sharp, or a natural with a flat is often
found: in this case only one sharp or flat is annulled. (Sometimes also
the single sharp or flat will be found by itself, cancelling the
double-sharp or double-flat). The natural is often used when a
composition changes key, as in Fig. 11, where a change from E to G is
shown.
[Footnote 8: It has already been noted (p. 6, Note) that in the German
scale our b-flat is called b, and our b is called H. From this
difference in terminology has grown up the custom of using the H (now
made [natural]) to show that _any_ staff-degree is in _natural_
condition, _i.e._, not sharped or flatted.]
[Illustration: Fig. 11.]
22. The group of sharps or flats (or absence of them) at the beginning
of a staff partially indicates the key in which the composition is
written. They are called collectively the _key-signature_.
23. The same key-signature may stand for either one of two keys, the
major key, or its relative minor, hence in order to determine in what
key a melody is one must note whether the tones are grouped about the
major tonic DO or the minor tonic LA. In a harmonized composition it is
almost always possible to determine the key by referring to the last
bass note; if the final chord is clearly the DO chord the composition is
in the major key, but if this final chord is clearly the LA chord then
it is almost certain that the entire composition is in the minor key.
Thus if a final chord appears as that in Fig. 12 the composition is
clearly in G major, while if it appears as in Fig. 13, it is just as
surely in E minor.
[Illustration: Fig. 12.]
[Illustration: Fig. 13.]
24. Sharps, flats, naturals, double-sharps and double-flats, occurring
in the course of the composition (_i.e._, after the key signature) are
called _accidentals_, whether they actually cause a staff degree to
represent a different pitch as in Fig. 14 or simply make clear a
notation about which there might otherwise be some doubt as in Fig. 15,
measure two. The effect of such accidentals terminates at the bar.
[Illustration: Fig. 14.]
[Illustration: Fig. 15.]
25. In the case of a _tie across a bar_ an accidental remains in force
until the combined value of the tied notes expires. In Fig. 16 first
measure, third beat, an accidental sharp makes the third space represent
the pitch C sharp. By virtue of the tie across the bar the third space
continues to represent C sharp thru the first beat of the second
measure, but for the remainder of the measure the third space will
represent C unless the sharp is repeated as in Fig. 17.
[Illustration: Fig. 16.]
[Illustration: Fig. 17.]
26. The following rules for making staff degrees represent pitches
different from those of the diatonic scale will be found useful by the
beginner in the study of music notation. These rules are quoted from
"The Worcester Musical Manual," by Charles I. Rice.
1. To sharp a natural degree, use a sharp. Fig. 18.
2. To sharp a sharped degree, use a double sharp. Fig. 19.
3. To sharp a flatted degree, use a natural. Fig. 20.
4. To flat a natural degree, use a flat. Fig. 21.
5. To flat a flatted degree, use a double flat. Fig. 22.
6. To flat a sharped degree, use a natural. Fig. 23.
[Illustration: Fig. 18.]
[Illustration: Fig. 19.]
[Illustration: Fig. 20.]
[Illustration: Fig. 21.]
[Illustration: Fig. 22.]
[Illustration: Fig. 23.]
27. When two different notations represent the same pitch, the word
_enharmonic_ is applied. Thus we may say that F sharp and G flat (on
keyboard instruments at least) are enharmonically the same.
This word _enharmonic_ is used in such expressions as enharmonic change,
enharmonic keys, enharmonic interval, enharmonic modulation, enharmonic
relation, etc., and in all such combinations it has the same meaning,
viz.--a change in notation but no change in the pitch represented.
28. A _note_ is a character expressing relative duration, which when
placed on a staff indicates that a certain tone is to be sounded for a
certain relative length of time. The pitch of the tone to be sounded is
shown by the position of the note on the staff, while the length of time
it is to be prolonged is shown by the shape of the note. Thus _e.g._, a
half-note on the second line of the treble staff indicates that a
specific pitch (g') is to be played or sung for a period of time twice
as long as would be indicated by a quarter-note in the same composition.
29. A _rest_ is a character which indicates a rhythmic silence of a
certain relative length.
30. The _notes and rests in common use_ are as follows:
[symbol] Whole-note. An open note-head without stem.
[symbol] Half-note. An open note-head with stem.
[symbol] Quarter-note. A closed note-head with stem.
[symbol] Eighth-note. A closed note-head with stem and one hook.
[symbol] Sixteenth-note. A closed note-head with stem and two hooks.
[symbol] Thirty-second-note. A closed note-head with stem and three hooks.
[symbol] Whole-rest.
[symbol] Half-rest.
[symbol] Quarter-rest.
[symbol] Eighth-rest.
[symbol] Sixteenth-rest.
[symbol] Thirty-second-rest.
31. The _English names_ for these notes are:
Whole-note--semi-breve.
Half-note--minim.
Quarter-note--crotchet.
Eighth-note--quaver.
Sixteenth-note--semi-quaver.
Thirty-second-note--demi-semi-quaver.
The corresponding rests are referred to by the same system of
nomenclature: _e.g._, _semi-breve rest_, etc.
32. _Sixty-fourth_ and _one-hundred-and-twenty-eighth-notes_ are
occasionally found, but are not in common use. The _double-whole-note_
(_breve_), made [breve symbol] or [old breve symbol], is still used,
especially in English music, which frequently employs the half-note as
the beat-unit. Thus in four-half measure the breve would be necessary to
indicate a tone having four beats.
33. The _whole-rest_ has a peculiarity of usage not common to any of the
other duration symbols, viz., that it is often employed as a
_measure-rest_, filling an entire measure of beats, no matter what the
measure-signature may be. Thus, not only in four-quarter-measure, but in
two-quarter, three-quarter, six-eighth, and other varieties, the
whole-rest fills the entire measure, having a value sometimes greater,
sometimes less than the corresponding whole-note. Because of this
peculiarity of usage the whole-rest is termed _Takt-pausa_
(measure-rest) by the Germans.
34. A _bar_ is a vertical line across the staff, dividing it into
measures. The word _bar_ is often used synonymously with _measure_ by
orchestral conductors and others; thus, "begin at the fourteenth bar
after J." This use of the word, although popular, is incorrect.
35. A _double-bar_ consists of two vertical lines across the staff, at
least one of the two being a heavy line. The double bar marks the end of
a division, movement, or entire composition.