Scriabin Prelude, Op. 11, No. 4 in E Minor
Click on the thumbnail images below to view larger versions of
the pictures.
The Music
Color
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The following images use color to indicate pitch/chord roots/keys.
Pitches are arranged so that a fifth relationship exists between
the adjacent color as shown to the right. Chromatic alterations
of the diatonic pitches are related to the color of their unaltered
form (e.g.: C# = slightly blue-green). Although this does
not relate the distant relation between the keys if E and E-flat
for example,
this color mapping is most useful for seeing the relationship between
keys in a tonal context (such as tonic-dominant key relations).
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| E Red |
| B Orange |
| F Yellow |
| C Green |
| G Blue |
| D Indigo |
| A Violet |
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Primary Analysis
The following picture relates chords and keys on various time scales
in the movement. The x-axis represent time. The start of the movement
is on the left-hand side, and the end of the movement is on the right-hand
side.
The y-axis represents the scale of the analysis.
The top of the picture represent the entire piece analysized as a single
unit. The next line represents two analyses: one for the first half of the
movement, and another for the second half of the movement. The movement
is subsequently subdivided into more and more pieces until the bottom
of the graph which divides the movement into one-beat units.
Therefore, the bottom of the picture shows the chord root, while the
top of the picture shows the overall key of the movement. The intermediate
regions are where modulations and tonicizations occur.
The y-axis is on a logarithmic scale.
Click on the picture below to see more detail.
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Good Features:
- Clearly in E Minor
- Clear relations between sections.
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Continuous key plot.
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Instantaneous Key
The following images blur the vertical axis of the primary analysis
picture.
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Vertical blurring of the primary analysis picture.
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Vertical blurring of the primary analysis picture with more blurring.
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