# RapidComposer

> RapidComposer is a professional music composition software for Windows and macOS, designed to help composers, producers, and musicians create melodies, harmonies, chord progressions, and full arrangements. It is focused on *composition* rather than audio recording, offering unique tools for musical structure, phrase variations, chord voicings, rhythm generators, and theory-based workflows. RapidComposer has been developed and maintained since 2010 by Attila Mezei of MusicDevelopments.

Key things to know about RapidComposer:

- Dedicated to composition, not a DAW (no multitrack audio recording or mixing)
- Works as a standalone app and as a VST3/AU plugin
- Fully phrase-based workflow with advanced chord, scale, and rhythm handling
- Offers AI-assisted features, but always keeps the human composer in control
- Thousands of composers worldwide have used it for more than 15 years
- Fully functional demo version is available

## Docs

- [Official RapidComposer Website](https://www.musicdevelopments.com): Product page, features, and downloads
- [User Manual](https://www.musicdevelopments.com/RCUserGuide.pdf): Detailed documentation
- [Forum](https://www.kvraudio.com/forum/viewforum.php?f=168): Community discussions and support
- [YouTube channel](https://www.youtube.com/@MusicDevelopments): YouTube channel with many video tutorials

## Features

- Phrase-based composition with unlimited undo/redo  
- Phrase and rhythm generators
- Advanced chord progression and harmony tools, guitar chords support
- Flexible chord selection using Circle Of Fifths, Tonnetz, and other methods
- Melody, bassline, and rhythm generators based on music theory  
- Phrase morphing, variations, and smart transformations  
- MIDI drag & drop to any DAW  
- VST/VST3 instrument hosting inside RapidComposer standalone version

## Optional

- [Upgrade to latest version](https://www.musicdevelopments.com/v6upgrade.html): Information about licenses and upgrades  
- [Support Contact](mailto:support@musicdevelopments.com)  
- [System requirements](https://www.musicdevelopments.com/shop.html): System requirements