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Sentence to think about :  In the busy world of show business, it is not necessary to be a good musician to be familiar with the music.  Pierre Dac
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Sentence to think about :  The real music is silence, and all notes are framed by silence.  Miles Davis
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Keys

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Keys

In solfeggio, a key traditional music or spelling in the spelling key today is the most common graphic signs placed at the beginning of the scope and whose function is to indicate a note marker associated with a line.

The key is necessarily the beginning of any significance, but may also occur elsewhere: in this case, it was simply dealing with a key change, a phenomenon quite similar to the change of measure.

The three key figures

There are three key figures: the treble key, which indicates the G3, near of the A of the tune, and for the treble, the tenor key, which indicates the C3 ut is the ancient name of C which concern the sounds of the medium, finally, the bass key, which indicates the F2 who concern the bass sounds.

Notation

treble key

bass key

tenor key

The design of the keys is derived from letters G (for SOL), F (for FA) and C (for DO or UT), which we had always put on a primitive line of the staff around the XIth century in order to attach to the absolute height line. The scribes have gradually transformed the appearance of these letters until getting the graphics of the current key. This finding is in fact the origin of the scope of the invention, is attributed to an Italian monk, Guido of Arezzo.

Eight keys and their position on the staff

Figure Each key can in principle bind to any line of the staff, we should have a full 15 keys. However, the practice has only kept two of F keys, four keys of UT and two key SOL. A key from C to B, the G3 is of the same octave as the C3.

  • Summary table of eight keys:
    Les huit clefs usuelles.

The role of different key

Each instrument or voice each having its ambitus own particular extent, the choice of the key allows you to write a score for that instrument or the voice, using up five lines of the staff, without too many extra lines increase .

Traditional Allocation

Nowadays, the key shows only one particular area of the range of heights. Until the mid-XVIIIth century, however, the key determined more precisely the type of voice and, by extension, the type of instrument landing.

  1. The treble 1st
    Formerly used by the violin for example in French music of the XVIIth century is nowadays abandoned;
  2. The treble key 2nd
    Assigned to treble and melody in general is rather one whose use is most prevalent. It is currently the key to all the voices, except for serious male voice. It is used by many instruments: violin, flute, clarinet, trumpet, right hand of the harp and keyboard instruments, piano, organ, harpsichord, etc.. as well as the instruments more graves in their highest register (violin viola, cello).
  3. The key of UT 1st
    Formerly used by the soprano (pitched voice of women and children), it now serves as the orchestral transposition.
  4. The key of UT 2 nd
    Formerly used by the mezzo-soprano (middle voice of women and children), it now serves as the orchestral transposition.
  5. The key of UT 3rd
    Formerly used by the contralto voice (deep voice of women and children), it is mainly used today by viola and cello in its upper register.
  6. The key of UT 4th
    Formerly used by the tenor (high voice of men), it is mainly used today for the cello, trombone and bassoon.
  7. The key ofF 3rd
    Formerly used by the baritone (middle voice of men), it now serves as the orchestral transposition.
  8. The key of F 4th
    Earmarked for bass instruments, it is used almost as much as the treble key. This is the key to the bass voice (deep voice of men) and baritone.
    It is also used by many bass instruments: stringed instruments (contrabass, cello, bass guitar, left hand on the harp), wind (bassoon, trombone, tuba) or keyboard (piano, organ, harpsichord), etc...

Finally, we note a key of F 5th, which was sometimes used in early Renaissance (nine keys at the time), but while the treble is still in many manuscripts of the XVIIIth century, this key of F 5th was quickly abandoned in practice. It produced the same notes that our current clef, two octaves lower.

The knowledge of all the keys is essential as musicians wishing to study the transposition, orchestration or composition, the others may be content with the key corresponding to their type of voice or instrument.

Seven major keys

The bass key F 4th and G 1st actually producing the same notes the heights of sound, cons, two octaves differ between these two keys, one can consider that there in fact seven keys. It is not by chance that the actual number of keys corresponding to the number of notes. Indeed, these seven keys allow the assignment of any name of note to any location on the staff or line spacing.

For example, the figure of note placed on the front line can take any name as the key used:
La même note dans les sept clefs.

We can indeed use different keys to transpose a score. Thus, to play two tones above a part written in treble key, the C must be E, the D, F, the E, G, etc... Just change the key of G in the key of F. Thus the G will become B, the A, C, the B, D, etc... It will also change the armor, and some accidentals, sharps, flats, etc... , that is another story.

This "implementation by the key" is not known by musicians of all countries, and appears linked to some French traditional music theory. Furthermore, it has the disadvantage of not always indicate the octave sounds real good. This process is a misuse of the historical sense of these different keys, whose existence was necessitated by the implementation but by a desire to avoid the additional lines.

Octave

Listing of treble key octavied.

Traditionally, the notation of certain instruments or certain voice can shift the actual pitch of the note marker, and therefore, the whole question of one octave vocal range, or more if necessary. This is a permanent octave.

  • For example, party recorder soprano or sopranino, written in treble key, must be played an octave above.
  • The tenor part, written in the treble key, must be sung an octave below, the bass part, written in key of F 4th, must be played an octave lower, bass guitar and also play an octave lower than indicated their keys (respectively G and F). In this case there is sometimes a "small eight" stuck under the key: for example in the treble key for the tenor parts.

Other notations on the key

The notes represented on the staff does not only depend on the key placed on it, in effect depending on the range color desired, the main notes of the scale may be altered a semitone. To avoid having to always note the half-tones, so very common to carry out major chords of notes in this range, the changes of a semitone (sharp, B-flat) notes major scale indicated by the key alone are then scored in just the armor near the top of the key score.

You can then cancel the half-ton of armor, note by note, by completing each of a B-natural in case of need, but the game played on stringed instruments or organ, the perfect chromatic harmony n is normally not obtained by playing the corresponding note of the major scale, but altered it slightly lower (or higher) in half-tone canceled the frame. The frame of the key does not normally naturals except to indicate that a note most of the range is in fact not changed according to the main note of the major chord, and mark and the dissonance is intended by composer. This particular case should only apply in the works played with different instruments, to serve as secondary instruments must agree with the notes played with the major principal instruments.

This notation of naturals is now little used in the "modern" music today, where simple major and minor scales are the most frequent, and where the keyboard instruments rarely allow the expression of these pure lines, in fact, this is often the performers who fit themselves and give the notes of their instruments in interpreting the scores according to the desired sound effect (the dissonances and other changes are now common and often volunteers). This notation is not necessary for the game with a single type of instrument or when alterations in semitones are not possible: in this case instruments emphasize a fairly defined frames and therefore also a limited number of keys based the limited number of lines they can play and give without dissonance.

Besides the armor, there are also frequent time signature indicating the length of the measures (and the number of notes or chords played in the rhythm of core), or other abbreviated notation to indicate the tempo ( or variation thereof) and the expressiveness of the notes. Their notation in the key rather than next to every note simplifies reading and understanding of score.

(Source: wikipedia.org - copyright authors - article under GFDL)


Creation date : 14/03/2009 15:53
Last update : 05/04/2009 10:04
Category : - Solfeggio
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