Tool 04 · harmony

Random chord generator

Hear unexpected chords through a focused palette of sampled and synthesised instruments, then improvise melodies by ear. Choose complete harmonic freedom, one tonal center, or selected scales and modes.

Harmony

Free randomNew root and chord type every time. Fixed rootOne root with changing chord colors. Scale / modeDiatonic chords from selected tonal worlds.

Starting / fixed root

Root behavior

Chord structure

Chords per scale8

After this many chords, the app chooses another selected scale. The same scale is not chosen twice in a row.

Chords per root8

Scales and modes to practise

Ionian is selected by default. Open a group to add more.

Chord palette

Major Minor Diminished Augmented Sus2 Sus4 Major 7 Minor 7 Dominant 7 Half-diminished Diminished 7 Minor-major 7 Major 7 ♯5 Dominant 7 ♯5 Dominant 7 ♭5 Major 6 Minor 6 Add9 Major 9 Minor 9 Dominant 9

Allowed scale degrees

I II III IV V VI VII VIII IX X XI XII

Voicing

Chord display

Avoid recent chord repetitions

Playback

Tempo BPM

A4 tuning440 Hz

Chord layer

Chord sound

Beats per chord2

Chord volume80 %

Bass layer

Bass support

Bass sound

Beats per bass note4

Bass support volume22 %

Sampled bass sounds retrigger on the selected interval. Synth stays continuous and changes pitch only at the next bass point.

Start slowly and connect chord tones with short melodic phrases. Smooth voice leading keeps the accompaniment musical; free random mode deliberately removes tonal predictability.

Metronome

Disabled by default. The chord and bass timing still runs normally; activate this for an audible practice pulse.

Tempo BPM

Notes per cycle

Note value

Default: 4 notes per cycle, each a quarter note = 4/4.

Click sound

Accent sound

Metronome volume85 %

Accent amount70 %

Beat patternTap a beat to change its level

▮▮ Accent▮ Normal– Rest

Play chord on beat

The chord changes on this beat of the metronome cycle.

Metronome tempo60 BPM

Show metronome beat

Free random

Ready

Press Start and play what you hear.