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Interactive theory

Chord visualizer

Choose a root note and chord quality below. The root is the note the chord is built on; quality describes how the other notes are spaced. See the note names and intervals, or distances from the root.

The root is the note the chord is built on. Quality describes how its other notes are spaced. Diminished uses notes three and six semitones above the root. Suspended 4 uses notes five and seven semitones above it. A semitone is one step on this keyboard.

Current chord

C

C major

An interval is the distance between two notes. The numbers below count from the root; M means major, m means minor, P means perfect and d means diminished.

Notes
C - E - G
Intervals
1P - 3M - 5P

Chromatic keyboard

A chromatic keyboard shows all twelve notes in an octave. The highlighted notes belong to the selected chord.

C
C#
D
Eb
E
F
F#
G
Ab
A
Bb
B

Pitch and chord calculations use the open-source Tonal.js music-theory library. Playback is a plain synthesized sound in equal temperament, stacked upward from the root. Chords belong to Western harmony; Hindustani raag performance is usually melodic over a drone and does not follow chord rules.