Chromatic harmonica
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The chromatic harmonica is a type of harmonica that uses a button-activated sliding bar to redirect air from the hole in the mouthpiece to the selected reed-plate desired. This harp is used for Celtic, Classical, and Jazz, as well as many other styles. Traditionally these are made so that when the button is not pressed, an altered diatonic major scale of the key of the harmonica is available and depressing the button accesses the same scale a semi-tone higher in each hole, thus giving an instrument capable of playing the 12 notes of the Western chromatic scale. Three famously accomplished chromatic harmonica players were the classical player Larry Adler, the classical player Burger and the jazz player Jean "Toots" Thielemans.
Chromatic harmonicas are usually 12, 14 or 16 holes long. The 12-hole chromatic is available in 12 keys, but because the entire chromatic scale is available by definition, most professionals stick with the key of C—which is perhaps easier to remember, since slide in will automatically be the sharps of the associated note. In the standard 12-hole chromatic in C the lowest note is middle C, while 16-hole variants start one octave lower.
For the 16-hole variant, the layout is usually as follows. note that the "D" in the last key-in draw note is common, though by no means presented in all chromatic.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
`1 `2 `3 `4 1 2 3 4 5 6 7 8 9 10 11 12
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blow: |C |E |G |C |C |E |G |C |C |E |G |C |C |E |G |C | key out
draw: |d |f |a |b |d |f |a |b |d |f |a |b |d |f |a |b |
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
`1 `2 `3 `4 1 2 3 4 5 6 7 8 9 10 11 12
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blow: |C#|F |G#|C#|C#|F |G#|C#|C#|F |G#|C#|C#|F |G#|C#| key in
draw: |d#|f#|a#|c |d#|f#|a#|c |d#|f#|a#|c |d#|f#|a#|d |
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[edit] Pros and Cons
Because it is a fully chromatic instrument, the chromatic harmonica is the instrument of choice in jazz and classical music. Also, due to the windsavers on the low and mid-range holes, it can bend notes on both blow and draw notes, giving additional tonality if needed. In traditional harmonica bands, the chromatic harmonica plays the lead part.
However, while the chromatic harmonica is capable of playing in all keys, it is not without its limitations. For example, while chromatic harmonicas can "bend" notes down in pitch, as a single-reed bend it sounds quite different from the typical dual-reed bend of a blues harp, and can only bend downward by a semi-tone. Furthermore, unless the windsavers are removed, chromatic harmonicas cannot "overblow" except on the upper four holes. Perhaps more importantly, the number of chords, double-stops, and legato phrasings available is limited.
As chromatic harmonica is designed to play melodies in any keys, many 16-hole and special version chromatic are only made in the key of C. Because of this, there are many approaches to get over the limits imposed on chromatic harmonica: the first approach, encouraged mainly by classical music players (such as Franz Chmel), is that a good harmonica player should try his or her best to use the chromatic in the key of C; some even discourage switching to other keys. An approach used by at least one reputable jazz musician, is to have several keys, and play them as if playing key of F on a key of C, although it still requires being able to play over complex changes, modulating and so forth, it enables the player to focus more on the music. Another approach is using altered tunings such as Diminished, which requires learning to play three (or four) patterns and then be able to play in all keys.
The range of G chromatic fits most Jazz standards, whereas the range of a key of C chromatic requires revoicing parts of the melodies since its lowest note is Middle C. It is up to the musician to work out the range of instrument that works best for them.
Stock chromatics are well suited for players who play chromatics in third position traditional Chicago Blues, and benefit from have a selection of keys.
[edit] Slider design
Chromatic harmonicas are often described as either "straight tuned" or "cross tuned". This refers to the way the slider is shaped to isolate the reed set being played at a given position (button "in" or button "out"). Traditionally the chromatic was "straight tuned" and the slider selected either the upper reed-plate (button out) or the lower reed-plate (button in). In the later half of the 20th century a new system came into use in which the slider played the upper and lower reed-plates at the same time, staggered by which hole (thus with the button out the player might play the upper reed-plate in hole 1, the lower reed-plate in hole 2, and then the upper again in hole 3 and so forth; pressing the button reversed this). This allows for a larger hole in the slider, and thus presumably more air gets through, allowing a louder volume. The two methods co-exist with some companies and players preferring one style and others another.
There are at least two other types of slider design as well. The first one has holes side-by-side with each other in the slider, thus opening only the left side of the chamber or the right side depending on button position. The Renaissance chromatic uses this design, which is claimed to mix the larger hole of a cross-tuned design with an even shorter movement than in straight tuned sliders. The simple way of doing this is to construct the harmonica more like a traditional Richter diatonic whereas the standard chromatic design shares more in common with the Knittlinger octave harmonicas. Note, however, the Renaissance uses a complex comb design to achieve their slider design. The second type of alternative design is found mostly in East Asia and is based more along the traditional Weiner tremolo construction. Here each reed is isolated in its own cell within the comb and the slider selects a single reed at a time rather than a cell containing both blow and draw reeds. The Tombo Ultimo is an example of this type of chromatic.
Finally, there are also several types of non-slide chromatic instruments available, particularly in Asia, such as the horn harmonica, as well as Tombo's S-50, Tombo's Chromatic Violin Range, and others. Tombo Chromatic Violin Range (three and a half octaves), as well as S-50 (three octaves) use the tremelo scale tuning system (but with only one-reed): in essence it is a C# tremolo harmonica sitting on top of a C tremolo harmonica, with blow and draw reeds each sitting in a single cell. The player switches between a top row tuned to C# and a bottom tuned to C by changing the angle of the harmonica.
[edit] Alternate tunings
Like Diatonic, Chromatics are available in numerous tunings. However, there are three more popular versions: one is the Irish tuning, which is done by flattening (instead of sharpening) the notes when the slide is in. This makes playing Irish music, and to a certain extent, blues, easier, since Irish music is commonly played in either the key of D or key of G. The use of C, with no sharps or flats, and B, with all flats, allows common Irish modes to be played while the downward tuning slide allows ornamentation in keeping with the Irish tradition. The Irish Tuning can be done easily by reversing the slide (flipping the slide upside down) of a chromatic in the key of B major; alternatively, one can just use the B major as is, but use slide-in as the home position.
Key out: identical to solo tuning
`1 `2 `3 `4 1 2 3 4 5 6 7 8 9 10 11 12
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blow: |B |Eb|Gb|B |B |Eb|Gb|B |B |Eb|Gb|B |B |Eb|Gb|B | key in
draw: |db|e |ab|bb|db|e |ab|bb|db|e |ab|bb|db|e |ab|bb|
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Another one is the bebop tuning, which is done by tuning the redundant C/C# in hole 4', 4, 8, and 12 blow into a Bb/B pair. This allows playing chords in the key of F, as well as playing a C7 chord.
`1 `2 `3 `4 1 2 3 4 5 6 7 8 9 10 11 12
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blow: |C |E |G |Bb|C |E |G |Bb|C |E |G |Bb|C |E |G |Bb| key out
draw: |d |f |a |b |d |f |a |b |d |f |a |b |d |f |a |b |
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`1 `2 `3 `4 1 2 3 4 5 6 7 8 9 10 11 12
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blow: |C#|F |G#|B |C#|F |G#|B |C#|F |G#|B |C#|F |G#|B | key in
draw: |d#|f#|a#|c |d#|f#|a#|c |d#|f#|a#|c |d#|f#|a#|c |
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Another popular version of alternate tuning is the classical tuning, which is done by switching between the blow and draw of the 4th hole of each octave:
`1 `2 `3 `4 1 2 3 4 5 6 7 8 9 10 11 12
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blow: |C |E |G |B |C |E |G |B |C |E |G |B |C |E |G |B | key out
draw: |d |f |a |c |d |f |a |c |d |f |a |c |d |f |a |c |
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`1 `2 `3 `4 1 2 3 4 5 6 7 8 9 10 11 12
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blow: |C#|F |G#|C |C#|F |G#|C |C#|F |G#|C |C#|F |G#|C | key in
draw: |d#|f#|a#|c#|d#|f#|a#|c#|d#|f#|a#|c#|d#|f#|a#|c#|
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This easily allow Imaj7 and iimajo7 chords, as well as many other chords, which are very beneficial for classical music playing.
