Reharmonizator

About this app

Harmonizator is a professional chord chart editor and reharmonization engine for musicians, composers, and jazz students. BUILD YOUR CHART Enter any chord progression using the intuitive chord builder or tap notes on the piano keyboard — the app detects the chord automatically. Supports all chord types: triads, seventh chords, extended harmonies, slash chords, and more. ANALYZE YOUR HARMONY Get instant harmonic analysis of your progression: key detection, Roman numeral notation, chord function (tonic, dominant, subdominant), and II-V-I pair highlighting. REHARMONIZE WITH PROFESSIONAL TECHNIQUES Apply jazz reharmonization tools used by professional arrangers: Secondary dominants Tritone substitution Related II (ii-V) Modal interchange Bass change & inversions Hybrid / polychords Chromatic approach Parallel voicing Cadential 6/4 & Sus Backdoor dominant HEAR IT IN REAL TIME Play back your progression with Rhodes, Synth, Guitar, or Choir sounds. Adjust tempo, time signature, chords per bar, and individual volumes for chords, bass, and drums. ADD A MELODY Write, record, or generate a melody over your chord chart. Edit notes in a piano roll or view them on a staff. Export your work as a MIDI file.

Version 2.0 introduces full melody support: Write melodies from scratch in the piano roll editor Record a melody with your voice or any instrument Generate a melody automatically over your chord progression — choose between jazz style (bebop vocabulary, approach notes, and jazz phrasing) or classical style (stepwise motion, voice leading, and melodic arcs) View your melody on a musical staff Export chords and melody as a MIDI file

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1. First observed Aug 12, 2026 · 5:24 PM $4.99