Designed for real composition, with all the tools a composer might need in one place. Used by thousands of composers since 2010.
RapidComposer is an innovative, phrase-based music composition software created to bring all the tools a composer might need into a single flexible environment. Its non-destructive workflow is tailored for composers, songwriters, and musicians of all genres, making it easy to turn musical ideas into fully developed compositions.
Latest News:
April, 2026: RapidComposer 16th Anniversary!
April 7, 2026: RapidComposer v6.1 released
November 15, 2025: 41 Realtime posted new videos about "Live mode"
October 8, 2025: RapidComposer 6 released! See what’s new in this version.
Upgrade to version 6 with a discount! Read upgrade info
Effortlessly craft rich chord progressions and utilize piano-style phrases, even without prior piano experience. Auto-harmonize melodies, receive chord suggestions, and load MIDI files with built-in chord detection. With tools like the chord palette and the Circle of Fifths chart, RapidComposer provides constant support to enhance your songwriting process.
Phrases automatically adapt to the current chord and scale on the master track, eliminating the need to adjust individual notes. Simply lay out chords on the master track or drop in a chord progression, and with a single keystroke, generate a harmony track with flawless voice leading. Start composing with ease today!
Included rhythm and phrase generators allow for creating a wide range of patterns, both monophonic and polyphonic. Generate melodies, apply variations to modify phrases non-destructively, and easily slice or adjust the rhythm of existing phrases.
Leverage an intelligent algorithm to generate optimal guitar chord fingerings based on your specific constraints. Easily edit fingerings directly on the fretboard. Convert tracks into editable guitar tablature with calculated, optimized fingerings. Export tabs seamlessly in MusicXML format for further use.
Suggestions by harmonic rules, borrowed chords, chord substitutions, pivot chords, diatonic and chromatic mediant chords, passing chords, bass and melody pedal tone chords, chords on scale, chord builder, chord voicing editor. With these tools, you'll always have guidance for selecting the perfect chords.
RapidComposer provides multiple methods for selecting chords for the master track or progressions, including the Tonnetz and Circle of Fifths. Chord buttons can be color-coded by consonance, common tones, tonality, or suggestions. Customize chord rules for progressions and apply chord voicings to individual tracks, phrases, or the master track.
With it, you can instantly create new multi-track compositions or phrases, or even let the engine continue an existing melody or arrangement. It’s a powerful way to spark creativity and explore new musical ideas inside RapidComposer.
* Full Edition only
Trigger and perform sections of your composition from a MIDI keyboard in real time, with per-track speed, transpose, and timing controls. Mouse triggering also supported. With LIVE Playback Mode in RapidComposer 6, your compositions are no longer static: they become expressive, playable instruments.
* Full Edition only
The AI assistant, available in both full and light editions, offers intelligent suggestions for chord replacements, progressions, rules, and even song structure based on the genre or mood you specify. Powered by AI models from multiple providers, this feature requires an API key from a supported service.
RapidComposer generates multi-track compositions with chords based on your settings and phrases, supporting a variety of workflows. It's designed to inspire creativity, even when you're not short on ideas.
* Full Edition only
Melodya is a motive generator and editor, which was integrated into RapidComposer as a Melody Editor tab. By enabling the chords track, you can create a melody for a given chord progression, so two entirely different workflows are supported.
* Full Edition only
The extensive libraries for chords, scales, and chord progressions are fully expandable. Use the docked browsers to search, preview, sort, group, and display items. Additionally, a file browser and a CC envelope browser have been included for enhanced navigation.
is a common headache for Asus laptop and desktop users. This error typically halts the startup process or prevents the Asus Armoury Crate software from opening correctly. Why This Happens Asus Framework Service
Before trying complex fixes, ensure the core services are actually running. Type in the Windows search bar and open it. Locate AsusCertService and Armoury Crate Service .
This error primarily plagues ASUS laptops and desktops, particularly those running Armoury Crate or MyASUS software. It occurs when core ASUS background services crash, conflict with Windows updates, or get stuck in a processing loop. Here is how to resolve the issue quickly and permanently. Quick Fix: Restart the ASUS Services
If you own an ASUS ROG laptop, desktop, or motherboard and have recently seen the frustrating popup: you are not alone. This error often manifests when launching Armoury Crate, during system startup, or randomly while gaming. The System Is Busy. Please Wait For Asus Framework Service
The error message typically indicates a communication failure between the ASUS Armoury Crate software and its background services . This is often caused by reserved TCP ports in Windows preventing the Node.js-based framework from starting correctly. Primary Fix: Reset Network Port Reservations
ASUS has acknowledged this issue in recent BIOS updates for ROG and TUF series (2023–2025 models). Check your laptop’s support page for a BIOS update labeled "Improve system stability when calling Framework Service." Flashing the latest BIOS often resolves the underlying race condition that causes the busy message.
The service uses a Node.js framework that may try to communicate on a network port already reserved by Windows or another application. Corrupted Updates: is a common headache for Asus laptop and desktop users
It is a background component that "glues" various ASUS utilities together. It handles:
If Method 1 doesn't work, the next best course of action is to perform a complete, clean reinstallation of Armoury Crate and its components. It is crucial to use ASUS's official uninstall tool, as manually uninstalling can leave behind files and registry entries that cause problems.
Please wait – the process will finish shortly. Type in the Windows search bar and open it
The Framework Service cannot run without this driver.
If you are a ROG or TUF gaming user, seeing the message usually happens when you try to open the Device page or update settings in ASUS Armoury Crate . This error indicates that the background service responsible for communicating with your hardware is stuck, crashed, or blocked by a system conflict. Why Does This Error Happen?
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