This is a must-have tool for every musicians.Chord Wheel. This app is an implementation of one of the most basic and significant music theory, 'Circle of fifths' on Android. In music theory, the circle of fifths (or circle of fourths) is a visual representation of the relationships among the 12 tones of the chromatic scale, their corresponding key signatures, and the associated major and minor keys. More specifically, it is a geometrical representation of relationships among the 12 pitch classes of the chromatic scale in pitch class space. Chord wheel is very useful and powerful tool for a songwriter who analyses / composes music and for a learner who studies music theory.
In the screen of this app, the Circle is made up of several concentric rings, which provides various information. By rotating the 2 rings, inner and outer, the needed information can be got easily.
The outer most ring shows information on the scale such as a tonic, a dominant, a sub-dominant, a relative minor, a relative major, and a progression of the degree. The next outer ring shows a series of note's name ordered by the progression of 5th, and the root note of a scale can be set by rotationg this ring. When rotating the outer ring, the inner ring rotates also. The next ring shows a degree of a note and a diatonic chord in that scale. By rotaing the next ring, a chord can be set. If a note name of the outer ring is touched, then a diatonic chord, of which the root note is the note, is set. Instead of the inner chord ring, another key progression ring can be displayed which is very useful to transpose. At the center of the concentric rings, a signiture of the scale is displayed.
Scale
A major scale and 3 minor scale and chorch modes are available. The degree of notes can be distinguished by its background color. The diatonic chords of the scale is displayed.
Chord
Most diatonic chords are available. The notes can be distinguished by its background color or its mark.
Transpose
For transposing, a ring of key progression can be displayed instead of a chord ring.
Interval
Intervals of notes can be found out easily and quickly. Just switch the inner wheel to an interval wheel.
Piano View
Information about a scale or a chord is shown on a mini piano. It can be played.
Guitar View
Information about a scale or a chord is shown on a mini guitar.
Colors and Marks
The degree of a scale and a chord is distinguished by its background color, it's in the series of rainbow's colors. For example, the 1st note is red, and the 7th note is violet.
Also, marks such as ●, △, ★, ◎ represent that it's 1st, 3rd, 5th, 7th note.
Signature
A signature of the scale is showed at the center of rings.
When the center is touched, user-defined action is performed.
Sounds
The sound of a scale and a chord can be played. A chord sound can be played arpeggio pattern or not. The piano sound which is bundled is recorded in high quality.
Sharp(＃) or Flat(♭) Notation
You can set your prefered notation, a sharp or a flat.
:: Available Scales
Major
Natural Minor
Harmonic Minor
Melodic Minor
Ionian
Dorian
Phrygian
Lydian
Mixolydian
Aeolian
Locrian
:: Available Chords
Major (Triad)
Minor (Triad)
Major 7th
Major 7th augmented 5th
Major 6th
Dominant 7th
Dominant 7th augmented 5th
Dominant 7th flatted 5th
Dominant 7th suspended 4th
Minor 7th
Minor 7th flatted 5th
Minor Major 7th
Minor 6th
Diminished 7th