Harmony Assistant
Harmony Assistant is desktop software for composing and editing music scores on Linux, macOS, and Windows.
What Harmony Assistant is
Harmony Assistant is desktop software for composing and editing music scores on Linux, macOS, and Windows. You can enter music with a mouse, computer keyboard, or external MIDI keyboard, then work across a full-page score or use engraver mode to arrange its layout. Its embedded SoftSynth includes hundreds of instruments and can play through basic sound cards without external MIDI hardware. The program supports MusicXML and MIDI, parts extraction, and tablature, and it can load and save MIDI, WAV, AIFF, MP3, OGG, TAB, ABC, and XML files. MyrScript, its embedded programming language, lets users add features. Documents can be password-protected and allowed to play without being modified. A trial has no time limit, but saving is disabled and printing is limited to one page while unregistered. A paid lifetime license applies to one platform and includes future versions; one personal license can be installed on multiple computers, with only one copy running at a time. Technical support is available by email, alongside tutorials, a help window, a manual, and a discussion forum.
Good
- Works on Linux, macOS, and Windows.
- Accepts mouse, keyboard, and external MIDI input.
- Includes hundreds of SoftSynth instruments.
- Loads and saves multiple audio and notation formats.
- Lifetime license includes future product versions.
Watch out
- No free plan.
- Trial disables saving and limits printing to one page.
- License applies to one platform.
Who it suits
It suits musicians who need score editing, MIDI and notation-file support, tablature, or parts extraction on a desktop platform. The time-unlimited trial may help those who want to explore the software before purchasing, though saving and printing are restricted while unregistered.
Verdict
Harmony Assistant brings score editing, playback, and support for several music formats into a desktop program. Check the trial restrictions and platform-specific license before deciding whether it fits your workflow.
Plans and prices
From Harmony Assistant's own pricing page, checked 19 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Harmony Assistant | — | Lifetime license for a given platform · Free updates for future versions · Trial download available without a time limit |
| Harmony Assistant license | — | Saving disabled in trial · printing limited to one page in trial · one running copy at a time · Lifetime license for one platform; future versions included |
The facts
Each one read from Harmony Assistant's own pages, with the date it was checked.
What it does
- Customization
- The embedded MyrScript programming language lets users add features to the program.checked 9 Oct 2026
- Deployment
- desktopchecked 19 Sep 2026
- Document protection
- Users can password-protect a document and allow it to be played without being modified.checked 9 Oct 2026
- File formats
- It can load and save formats including MIDI, WAV, AIFF, MP3, OGG, TAB, ABC, and XML.checked 9 Oct 2026
- Input methods
- Scores can be entered with a mouse, computer keyboard, or external MIDI keyboard.checked 9 Oct 2026
- Installations
- A personal license permits installation on multiple computers, provided only one copy runs at a time.checked 9 Oct 2026
- License scope
- A registration code is valid for a lifetime on one platform and covers future product versions.checked 9 Oct 2026
- MIDI support
- Yeschecked 19 Sep 2026
- MusicXML support
- Yeschecked 19 Sep 2026
- Parts extraction
- Yeschecked 19 Sep 2026
- Purpose
- Harmony Assistant is software for computer-assisted music composition and editing.checked 9 Oct 2026
- Related module
- Virtual Singer is an additional module that sings song lyrics in multiple languages and voices.checked 9 Oct 2026
- Score editing
- It supports full-page score editing and an engraver mode for score layout.checked 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.checked 9 Oct 2026
- Synthesizer
- Its embedded SoftSynth includes hundreds of instruments and can play through basic sound cards without external MIDI hardware.checked 9 Oct 2026
- Tablature support
- Yeschecked 19 Sep 2026
Money
- Free plan
- Nochecked 19 Sep 2026
- Trial limits
- The trial has no time limit, but saving is disabled and printing is limited to one page while unregistered.checked 9 Oct 2026
The company
- Headquarters
- Toulouse, Francechecked 28 Sep 2026
- Maker
- Myriad Software says it was established in 1988 and is located in Toulouse, France.checked 9 Oct 2026
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