KVRDC26: Bitsonic Melody Harmonizer – Free Harmony Generator Plugin for macOS, Windows & Linux, AU & VST3

The KVR Developer Challenge 2026 is now at the download and voting stage; it’s time to focus on each of the 56 entries that are available now, for free, for everyone.

Melody Harmonizer by Bitsonic

Melody Harmonizer is a free MIDI plugin that helps turn a melody into a chord progression.

Load a MIDI file or capture a melody from host playback, choose between Basic and Complex mode, generate the harmony, preview it with the built-in piano sound, then drag the generated MIDI chord progression back into your DAW.

Features:

  • Load a MIDI file or capture MIDI from host playback
  • Generate a chord progression from a melody
  • Choose between Basic and Complex mode
  • Preview the result inside the plugin
  • Drag the generated MIDI chord progression back into the DAW

Product video: Watch the Melody Harmonizer video on YouTube

Download, vote & donate at
www.kvraudio.com/kvr-developer-challenge/2026

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