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Harmony Assistant
Harmony Assistant · Toulouse, France · founded 1988
What it is
Harmony Assistant is desktop software for computer-assisted music composition and score editing. It runs on Linux, macOS and Windows and supports MusicXML, MIDI, tablature and parts extraction. Users can enter scores with a mouse, computer keyboard or external MIDI keyboard, then work in full-page editing or engraver mode for layout. Its embedded SoftSynth includes hundreds of instruments and can play through basic sound cards without external MIDI hardware. The program loads and saves MIDI, WAV, AIFF, MP3, OGG, TAB, ABC and XML files. MyrScript lets users add features, while documents can be password-protected and allowed to play without modification. Virtual Singer is an additional module for singing lyrics in multiple languages and voices. The trial has no time limit, but saving is disabled and printing is limited to one page while unregistered. A registration code is a lifetime license for one platform and includes future versions.
For and against
For
- Windows, macOS and Linux support
- MusicXML and MIDI support
- Embedded instrument synthesizer
- Multiple import and export formats
- Lifetime license with future versions
Against
- No free plan
- Trial disables saving
- Trial printing limited to one page
- License covers one platform
The verdict
Harmony Assistant combines notation editing, playback, scripting and broad file-format support across three desktop systems. Its un time-limited trial is useful for evaluation, though saving remains disabled until registration.
Who it suits
It suits musicians, composers and editors working with notation, MIDI, tablature or extracted parts on desktop computers. The trial allows evaluation before purchasing a platform license.
Plans and prices
Harmony Assistant
Lifetime license for a given platform · Free updates for future versions · Trial download available without a time limit
Read 19 Sep 2026 · myriad-online.com
Harmony Assistant license
Saving disabled in trial · printing limited to one page in trial · one running copy at a time
Read 9 Oct 2026 · myriad-online.com
On the record
- Customization
- The embedded MyrScript programming language lets users add features to the program.myriad-online.com · read 9 Oct 2026
- Deployment
- desktopmyriad-online.com · read 19 Sep 2026
- Document protection
- Users can password-protect a document and allow it to be played without being modified.myriad-online.com · read 9 Oct 2026
- File formats
- It can load and save formats including MIDI, WAV, AIFF, MP3, OGG, TAB, ABC, and XML.myriad-online.com · read 9 Oct 2026
- Input methods
- Scores can be entered with a mouse, computer keyboard, or external MIDI keyboard.myriad-online.com · read 9 Oct 2026
- Installations
- A personal license permits installation on multiple computers, provided only one copy runs at a time.myriad-online.com · read 9 Oct 2026
- License scope
- A registration code is valid for a lifetime on one platform and covers future product versions.myriad-online.com · read 9 Oct 2026
- Maker
- Myriad Software says it was established in 1988 and is located in Toulouse, France.myriad-online.com · read 9 Oct 2026
- MIDI support
- Yesmyriad-online.com · read 19 Sep 2026
- MusicXML support
- Yesmyriad-online.com · read 19 Sep 2026
- Parts extraction
- Yesmyriad-online.com · read 19 Sep 2026
- Purpose
- Harmony Assistant is software for computer-assisted music composition and editing.myriad-online.com · read 9 Oct 2026
- Related module
- Virtual Singer is an additional module that sings song lyrics in multiple languages and voices.myriad-online.com · read 9 Oct 2026
- Score editing
- It supports full-page score editing and an engraver mode for score layout.myriad-online.com · read 9 Oct 2026
- Support
- Technical support is free by email for registered and unregistered users, and the maker also provides in-program video tutorials, a help window, a manual, and a discussion forum.myriad-online.com · read 9 Oct 2026
- Synthesizer
- Its embedded SoftSynth includes hundreds of instruments and can play through basic sound cards without external MIDI hardware.myriad-online.com · read 9 Oct 2026
- Tablature support
- Yesmyriad-online.com · read 19 Sep 2026
- Trial limits
- The trial has no time limit, but saving is disabled and printing is limited to one page while unregistered.myriad-online.com · read 9 Oct 2026
