HarmonyKeen

Write a melody. HarmonyKeen writes the harmony.

Play or draw a tune, tap Generate, and hear it harmonized: a second voice in thirds or sixths, full chords, four independent parts, barbershop close harmony or open jazz voicings, all built on the rules of harmony that musicians study.

ENTER A MELODY
• Play it on the on-screen keyboard
• Draw notes on the grid with your finger or Apple Pencil
• Record it in time with the metronome
• Connect a MIDI keyboard
• Or import a MIDI file

CHOOSE A STYLE
From classic thirds and wide sixths to smooth chords, soulful chords, four-part SATB and jazz voicings. Choose how many voices, and whether the harmony sits above or below your melody. Then shape how the parts move: how far they may leap, whether they may move in parallel fifths and octaves, and how closely they follow classical voice-leading.

MAKE IT YOURS
• Swap any chord for another that fits
• Edit notes on the grid or right on the score
• Keep every note in key
• Move the whole song to any key
• Undo and redo your edits

HEAR IT, SEE IT, TAKE IT WITH YOU
• Instrument sounds for every part
• Sheet music you can print
• Export MIDI, MusicXML and PDF
• Projects saved in Files, including iCloud Drive

IN YOUR MUSIC APPS
HarmonyKeen also comes as Audio Unit (AUv3) plug-ins, so you can harmonize right inside music apps such as Logic Pro, Cubasis, AUM and GarageBand.

One purchase. No subscription, no account, no ads, and no data collected. Made by Malsah Labs in Arizona.