Chord chart
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A chord chart or Jazz chart is a form of musical notation that describes harmonic and rhythmic information only. It is the most common form of notation used by professional session musicians playing jazz or other forms of popular music. It is intended primarily for a rhythm section (usually consisting of piano, guitar, drums and bass). In these genres the musicians are expected to be able to improvise the actual notes used to represent the chord and the appropriate ornamentation or counter melody.
In all this the "chart" system corresponds quite closely to the "figured bass" system used in the eighteenth century to allow the continuo ("rhythm section") keyboard to improvise right-hand chords over a written bass line played with the left hand.
The harmony is given as a series of chord symbols above a traditional musical staff. The rhythmic information can be very specific and written using a form of traditional notation, sometimes called rhythmic notation, or it can be completely unspecified using slash notation, allowing the musician to fill the bar any way he sees fit (called "comping").
The term "chord chart," when used by professionals, is usually abbreviated to "chart."
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[edit] Rhythmic notation
Rhythmic notation specifies the exact rhythm in which to play or comp the indicated chords. The chords are written above the staff and the rhythm is indicated in the traditional manner, though pitch is unspecified through the use of slashes placed on the center line instead of notes. This is contrasted with the less specific slash notation. (Konowitz 1998, p.68-69)
[edit] Slash notation
Slash notation is a form of purposefully vague musical notation which indicates or requires that an accompaniment player or players create their own rhythm pattern or comp according to the chord symbol given above the staff. On the staff a slash is placed on each beat (so that there are four slashes per measure in 4/4 time). (Konowitz 1998, p.68-69)
Slash notation and rhythmic notation may both be used in the same piece, for example, with the more specific rhythmic notation used in a section where the horn section is playing a specific melody or rhythmic figure that the pianist must support, and with slash notation written for the pianist for use underneath improvised soli.
[edit] Nashville notation
Nashville notation is a method of writing, or sketching out, musical ideas, using numbers in place of chord names. For example:
In the key of C, C=1, D=2, E=3, and so on for all seven notes in the key. So, the chord progression C///F///G///C/// would correspond to 1///4///5///1/// in Nashville notation, while 1///4///5///1/// in the key of G would become G///C///D///G/// .
This method of notation facilitates musicians (who are familiar with basic music theory) being able to play the same song in any key, perhaps to accommodate a singer's vocal range. Since it uses key-relative "figures" rather than absolute chord-names, it rather more closely resembles the classical "figured bass", in which the chord is given as a group of numbered intervals above the written bass-note.
[edit] Chord charts in computer files
Chord charts can be represented in a schematic way as ASCII files, where bar lines are given as pipe symbols "|", chord symbols are approximated as text and beats may be indicated with a forward slash "/".
In this context, the term "chord chart" is also used to describe a lyric sheet where chord symbols are placed above the approriate syllables of the lyrics to associate the relative timing of the chord changes to the words of a song.
[edit] External links
[edit] See also
[edit] Source
- Konowitz, Bert (1998). Teach Yourself Chords and Progressions at the Keyboard. ISBN 0-7390-0017-9.
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