How do I harmonize a melody for a horn section in MuseScore?
With AiHud Notation Copilot you type "voice the alto 1 melody in bars 9-16 for the saxes, drop 2" and it writes the harmony parts under the melody in your open MuseScore 4 score. Voicings come from your chord symbols (close or drop 2, with tensions), passing notes get diminished passing chords, and every line stays in its instrument's range.
It works for any section you have staves for: saxes, trumpets and trombones, horns, strings or a choir. Classical-style scores keep the harmony held under passing tones instead of re-voicing every note.
How it works: install in 4 steps
- Get a free key on copilot.aihud.net and click “Download the plugin”. The zip has your key built in, so there is nothing to paste.
- Unzip it into your MuseScore plugins folder, so you end up with a
NotationCopilotfolder there:
Windows:Documents\MuseScore4\Plugins\
Mac:Documents/MuseScore4/Plugins/(in Finder: Go → Home → Documents)
Linux:~/Documents/MuseScore4/Plugins/ - Restart MuseScore 4, open Home → Plugins and click Notation Copilot → Enable.
- Open a score and choose Plugins → Composing/arranging tools → Notation Copilot. Type what you want in the chat.
Example requests and what you get
voice the alto 1 melody in bars 1-8 for the saxes
Result: Five-part close voicing: melody on top in alto 1, alto 2 / tenor 1 / tenor 2 / bari underneath.
harmonize the trumpet 1 line in bars 25-32 for the brass, drop 2
Result: Drop-2 voicings across trumpets and trombones, transposing instruments written correctly.
brass hits on 2 and 4 in bars 25-28
Result: Short accented chords on beats 2 and 4 with smooth voice leading.
Honest limits
- It edits the score you have open; it can't add new instruments or staves. Add the staff in MuseScore first (press I), then ask Copilot to write for it.
- Each request is one undo step: one Ctrl+Z (Cmd+Z on Mac) puts the score back exactly as it was.
- It works in MuseScore Studio 4.x (Windows, macOS, Linux) and needs an internet connection; your score is sent to AiHud only to make the edit and is not stored.
- Big jobs (more than about 128 part-bars at once) ask you to confirm first. Vague requests get a short question with one-click options instead of a guess.
- It writes from your chord symbols, or from the harmony it reads in the score when there are none. It is a fast first draft: check it by ear like you would a student's or a colleague's part.
Price
Free for 100 applied edits a month, no card needed (questions and “nothing to change” replies don’t count). After that, pay as you go with AiHud credits: A request typically uses 10 to 25 credits (1 credit = $0.001); a request that needs a clarifying question costs two rounds. $10 is roughly 400 to 1,000 requests. See pricing.
Try AiHud Notation Copilot on your own score. Free for 100 edits a month.
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