RapidComposer

From $79 · 30-day trial

What the maker publishes

AI assistant

The AI assistant can suggest chord replacements, progressions, rules, song structures, and tracks; it requires an API key, supports multiple providers, and can use local models. source

Chord handling

Phrases automatically conform to chords on the master track, and the software offers chord suggestions and progression generation. source

Composition tools

Its features include phrase and rhythm generators, chord progression editing, melody generation, and melody auto-harmonization. source

Data protection

MusicDevelopments' privacy policy says it processes personal data under the EU General Data Protection Regulation (GDPR). source

DAW integration

RapidComposer's plug-in versions work in DAWs that support plug-ins with MIDI output, and tracks or compositions can be dragged and dropped to DAWs. source

Headquarters

Pomaz, Hungary source

Installations

A license allows three installations, provided they are not used simultaneously. source

Instruments and plug-ins

RapidComposer supports VST 2.4 and VST3 instruments and effects, SoundFont, and SFZ. source

Intended users

The maker describes Light Edition as for hobbyist musicians and Full Edition as for professional composers. source

Maker location

The maker's imprint identifies MusicDevelopments as Mezei Attila E.V., located in Pomáz, Hungary. source

Neural Phrase Engine

The full edition's Neural Phrase Engine generates or continues phrases and multi-track compositions using local AI models. source

Offline use and licensing

The maker says an internet connection is not required to run the software and copy protection uses a license key without online activation. source

Purpose

RapidComposer is phrase-based music composition software for composers, songwriters, and musicians. source

Support and updates

The shop lists product support with Light Edition and says updates are released regularly, typically every one to two months. source

Trial limitation

The fully functional demo expires after 30 days and does not allow saving or exporting files. source

Checked against the maker's pages on 10 Oct 2026.