Key layouts majorFor all possible scales on a 4 row InstrumentI use a 4 row instrument in the scale of A-D-G-C as an example, but these patterns are usable on all instruments with different scales. Only the scale names have to be replaced if used on different scales. The following rows are explained: I recommend, to start with exercises in the 2nd or 3rd row, then with the somewhat more difficult 4th row and then with the 1st row. I also recommend to play or try to play the same tune in high and in low position as well, this way you can find the best sounding position for the respective tune. And now the Key layoutsPlaying on the 2nd row, D-majorPush, scale 2nd row. All seven notes of the diatonic scale are present in three different octaves (positions on the key layout) and even some semitones. The most important keys are printed bold. The Gleichton is underlined.
Alternating bass and double dominant (DD) is possible. In combination with the above the respective bass keys:
Pull, scale of the 2nd row. Nearly all notes are present in all positions. In low position the 3rd scale note is missing. If this note is needed in the tune one has to change to pull direction for this note. If this is done the bass position (fingers) has to be changed too.
In combination with the above the respective bass keys:
Playing on the 3rd row, G-majorPush, scale of the 3rd row. All seven notes of the scale are present in all three positions.
Alternating bass and double dominant (DD) is possible. All scale notes are present for bass runs. In combination with the above the respective bass keys:
Pull, scale of the 3rd row. In all three positions all notes of the scale are present, only the 1st note in the high position is missing. If these notes are needed in the tune one has to change to pull direction for these notes. If this is done the bass position (fingers) has to be changed too.
In combination to the above the respective bass keys:
Playing on the 1st chord row, A-majorPush, scale of the 1st row. The 7th note of the scale is missing, If this note is needed in the tune one has to change to pull direction for these notes. If this is done the bass position (fingers) has to be changed too. Experienced musicians change the whole measure to pull direction. And then in low position the 2nd note is missing too.
Alternating bass is possible, double dominant (DD) is reachable but in a different position in second row. In combination with the above the respective bass keys:
Pull, scale 1st row. All scale specific notes are present in low and middle position, but a Gleichton is not available. The respective 5th note of this scale is on the second row.
For alternating bass the “2” is used, correct note but different fingering than in push direction. In combination with the above the respective bass keys:
Playing on the 4th row, C-majorPush, scale on 4th row. In all positions the 4th note of the scale is missing. Is only available in pull direction without the needed bass keys. Very often this key is added as an accidental with other missing notes.
Alternating bass and double dominant is possible, 4th step is reachable on Pull. With push and pull changes all scale notes are present for bass runs. In combination with the above the respective bass keys:
Pull, scale 4th row. In high position, the important scale 5th step note is missing and is only reachable in push direction or with an auxiliary key.
In combination with the above the respective bass keys:
More scales (F-Major, E-Major)These scales are practically not playable to some extent and are incomplete in every position.
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