The grid consists of circle buttons representing musical notes arranged in a special order useful for making chords. The order makes harmonically related (“good sounding”) notes be geometrically close together.
Each three neighbour notes form a triangle corresponding to major or minor triad. Major(triangle up) or minor(triangle down) triads can be played by a single touch in the center of the triangle. Chord root is colored yellow, other chord notes are highlighted white. Active notes are highlighted for all octaves on the grid and on the keyboard below.
Notes from the selected scale are brighter, out-of-scale notes are darker. See Scales for scale selection.
Details (partially borrowed from Wikipedia):
- Note-values ascend by the musical interval of a perfect fifth along the horizontal axis.
- On one diagonal axis notes ascend by four semitones (a major third or diminished fourth).
- On the remaining diagonal axis notes ascend by three semitones (a minor third or augmented second).
- The notes of commonly played chords are clustered close together.
- Any major triad and minor triad can be played with a single finger.
- More complex chords can be played by a combination of a triad with surrounding notes.
- Ergonomically, the harmonic table format is exceptionally compact: all notes of the major and minor scales fall under the fingers, and all common chords can be played with one or two fingers.
- Harmonic table is isomorphic, meaning a single chord shape can be used for any root.
[TIP] Pan with a single finger in between the circles to create a smooth chord progression.
[TIP] Two chords sharing notes will sound harmonically close. Single finger panning from the tip above will create chord progression where each consequent chord shares two notes with the previous one. Smooth progressions are generally useful for verses.
[TIP] Two chords without shared notes will sound harmonically distant. Use distant chords for dramatic harmony changes (generally useful for choruses).
[TIP] Tired of major or minor? Hit a triad, then spice it up by adding one of the surrounding notes.
[TIP] (Almost) any combination of notes close to each other would produce a valid chord.
Common chord shapes
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