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HarmonyKeen

Real HarmonyKeen output

Hear the difference harmony makes.

Here are more melodies to explore, each one arranged in the HarmonyKeen app.

Each one begins as a melody on its own. Play it, then generate the harmony and hear what HarmonyKeen writes around it.

01 Close Harmony (Barbershop)

Three voices packed close around the lead.

Close harmony keeps the parts within a narrow band, so they move as one block rather than as three separate lines.

Eb minor · 118 BPM · Bright piano

Neon Curfew

Play the melody, then generate the harmony.

Melody Harmony (3 parts)
Melody only
With harmony

02 Counter Melody

A second melody that answers yours.

HarmonyKeen writes a separate line with its own rhythm and shape. Here it runs below the riff, moving independently while still belonging beside it.

E minor · 136 BPM · Piano

Tripwire

Play the melody, then generate the harmony.

Melody Harmony
Melody only
With harmony

03 Jazz Voicings (Open)

Wide, open harmony instead of close chords.

One voice above the melody and one below, built from open fourths rather than stacked thirds, so the harmony never crowds the tune.

G minor · 142 BPM · Celesta

Undertow

Play the melody, then generate the harmony.

Melody Harmony (2 parts)
Melody only
With harmony

04 Classic Harmony (Thirds)

One trumpet call, answered in thirds.

A harmonized line above and below turns a single trumpet into a section, which is what the style is for.

A# major · 128 BPM · Trumpet

Clarín

Play the melody, then generate the harmony.

Melody Harmony (2 parts)
Melody only
With harmony

05 Soulful Chords

Gospel chords under a lead that keeps climbing.

All three voices sit below the melody, so the top line stays clear while the chords underneath do the work.

D# major · 116 BPM · Piano

Noon Service

Play the melody, then generate the harmony.

Melody Harmony (3 parts)
Melody only
With harmony

06 Drone Bass

One note held under everything.

The harmony is a single sustained tone for the whole passage. What moves is the melody against it.

D minor · 88 BPM · Cello

Cold Open

Play the melody, then generate the harmony.

Melody Harmony
Melody only
With harmony

07 Classic Harmony (Thirds)

The same harmony style, somewhere else entirely.

Thirds again, this time on a dark syncopated keyboard riff rather than a trumpet call. The style works in any genre.

C minor · 140 BPM · Piano

Vapor Trail

Play the melody, then generate the harmony.

Melody Harmony (2 parts)
Melody only
With harmony

08 Four-Part (SATB)

Four parts, with your melody in the middle.

The melody is the tenor here, so two voices sit above it and one below, and the arrangement closes around the line you wrote.

Ab major · 88 BPM · Drawbar Organ

Choir Loft

Play the melody, then generate the harmony.

Melody Harmony (3 parts)
Melody only
With harmony

09 Jazz Voicings (Open)

The same open voicings, pared back to one.

A single voice below the head, which is as spare as this style gets and still sounds like itself.

G minor · 92 BPM · Electric Piano

Corduroy

Play the melody, then generate the harmony.

Melody Harmony
Melody only
With harmony

10 Smooth Chords

Smooth chords under a line that skips its fifth.

The melody leaves the fifth out on purpose, which gives the three voices underneath something real to do.

C minor · 104 BPM · Piano

Nightshift

Play the melody, then generate the harmony.

Melody Harmony (3 parts)
Melody only
With harmony

11 Jazz Voicings (Open)

Slow, spacious, and still full.

Three open voices around a melody that leaves real silence between its phrases, the way a film cue breathes.

F minor · 72 BPM · Piano

Threshold

Play the melody, then generate the harmony.

Melody Harmony (3 parts)
Melody only
With harmony

That is what it does with a melody.

Bring your own and hear it work on something you wrote.

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