80/20 Music School logo80 / 20MUSIC SCHOOL

Interactive practice tool

The Ultimate Harmony Trainer

See it. Hear it. Name it. Build harmonic reflexes with real sampled instruments and focused practice tools.

Back to Music School

Precision tool

Metronome

Beat patternOne of three sounds per step; no selection is silent.
4 steps
BellDryWood
1
1
2
2
3
3
4
4

Your sound

Choose your sound

Selecting an instrument immediately previews the current harmony as an arpeggio.

Audio starts on first play
Sampled instrument
Root note

Harmony library

Choose what you want to hear

C Major1 – 3 – 5

Related harmony

1 – 3 – 5

Compatible chords

6 matches
ChordC Major 71 – 3 – 5 – 7
Shared: C · E · GAdds: B
ChordC Dominant 71 – 3 – 5 – ♭7
Shared: C · E · GAdds: B♭
ChordC Major 61 – 3 – 5 – 6
Shared: C · E · GAdds: A
ChordC Add 91 – 3 – 5 – 9
Shared: C · E · GAdds: D
ChordC 6 / 91 – 3 – 5 – 6 – 9
Shared: C · E · GAdd: D · A
ChordC Major 91 – 3 – 5 – 7 – 9
Shared: C · E · GAdd: D · B

Compatible scales

6 matches
ScaleC Major Pentatonic1 – 2 – 3 – 5 – 6 – 8
Shared: C · E · GAdd: D · A
ScaleC Major (Ionian)1 – 2 – 3 – 4 – 5 – 6 – 7 – 8
Shared: C · E · GAdd: D · F · A · B
ScaleC Lydian1 – 2 – 3 – ♯4 – 5 – 6 – 7 – 8
Shared: C · E · GAdd: D · F♯ · A · B
ScaleC Mixolydian1 – 2 – 3 – 4 – 5 – 6 – ♭7 – 8
Shared: C · E · GAdd: D · F · A · B♭
ScaleC Harmonic Major (Ionian ♭6)1 – 2 – 3 – 4 – 5 – ♭6 – 7 – 8
Shared: C · E · GAdd: D · F · A♭ · B
ScaleC Double Harmonic Major1 – ♭2 – 3 – 4 – 5 – ♭6 – 7 – 8
Shared: C · E · GAdd: C♯ · F · A♭ · B

Visual map

Acoustic guitar map · C Major

Open strings live in the tuning labels; frets begin at 1.

  • Root
  • Major 3rd
  • Perfect 5th

Creative practice

Random chord progression

Sprinkle in substitutionsEnable techniques, then generate to hear them in context.

Each chord lasts one 4/4 bar. Sync mode locks the metronome to this transport.

Inversion guide

Voice leading

The highlighted inversions minimize movement from one chord to the next. Every row uses the same pitch range for direct comparison.

13 semitones total movement

Build your own

Custom chord builder

C Major1 – 3 – 5
Recognized chordC Major1 – 3 – 5
Custom chord sequenceBuild and audition up to 16 chords.

Select intervals and add the first chord.

Listen first

Ear training

Every selection button is visible. There are no hidden rows and no nested scroll area.

Score0 / 0
Challenge playbackArpeggio is the default; scales always play note by note.

Current challenge

Ready when you are

64 of 64 targets active. Scales always resolve to the octave; extensions stay above it.

Training poolSelect exactly what may appear.

Intervals

12 / 12 active

Triads

6 / 6 active

Seventh Chords

9 / 9 active

Extended Chords

14 / 14 active

Altered Chords

6 / 6 active

Scales

17 / 17 active

Practice track

Drum transport syncFor a full track, sync drums to the chord generator and set the metronome to “Sync to chord generator”.
Rhythm lab

Drum rhythm trainer

Generate a groove, edit every sixteenth note and practise against real sampled drums.

Rhythm trainer ready
OffGhostAccentClick a step repeatedly to cycle its strength.