Air on the G String
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The arrangement differs from the original in that the part of the first violins is transposed down so that it can be played entirely on a violin's lowest string, i.e., the G string. It is played by a single violin (instead of by the first violins as a group).
Bach's third Orchestral Suite in D major, composed in the first half of the 18th century, has an "Air" as second movement, following its French overture opening movement. The suite is composed for three trumpets, timpani, two oboes, strings (two violin parts and a viola part), and basso continuo. In the second movement of the suite however only the strings and the continuo play. This is the only movement of the suite where all other instruments are silent.
The music of the "Air" is written on four staves, for solo violin, violins, violas, and continuo. The interweaving melody lines of the high strings contrast with the pronounced rhythmic drive in the bass.
In the late 19th century, violinist August Wilhelmj arranged the second movement of Bach's third Orchestral Suite for violin and an accompaniment of strings, piano or organ (harmonium). On the score he wrote auf der G-Saite (on the G string) above the staff for the solo violin, which gave the arrangement its nickname.
In Wilhelmj's version the piece is transposed down from its original key (D major) to C major. Then the part of the first violins is transposed further down an octave and given to a solo violin that can play the entire melody on its lowest string, the G string. The dynamic markings added by Wilhelmj are more in line with a romantic interpretation than with the baroque original.
As a violin can't play very loudly in its lowest register, all the other parts of Bach's music were firmly reduced in Wilhelmj's version: the keyboard part is to be played staccato and pianissimo, causing the effects of interweaving melodies and of drive in the bass part to get lost. The accompanying violins and violas play muted (con sordino), and the bass part for cellos and double basses is to be played pizzicato and sempre pianissimo, with the same change in effect compared to Bach's original.
Later, a spurious story circulated that the melody was always intended to be played on the G string alone. The solo violin part of Wilhelmj's arrangement is sometimes played on the counter-tenor violoncello. As a result of the popularity of the piece, on the G string remained in the name of various arrangements whether or not a string instrument playing on its G string was involved. Most of these versions have in common that the original melody of the first violins is played in the low register of a solo instrument, accompanied by a reduction of the material of the other parts of Bach's piece, although occasionally versions that stay more in line with Bach's original can go by the same name.
- Grove's Dictionary of Music and Musicians, 5th edition, 1954, Vol. IX, p. 298, "Wilhelmj, August"
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