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.
If you try to launch Scarlet immediately, you will see an "Untrusted Enterprise Developer" error. Follow these steps to bypass it: Open the iOS app. Navigate to General > VPN & Device Management .
: To reduce the risk of an automatic ban, launch and play the game with cellular data and Wi-Fi disabled.
While enterprise certificates can be revoked by Apple, Scarlet is regularly updated with new certificates. Lightweight: It doesn't drain battery or run heavy background processes. Step-by-Step: Installing FR Legends MOD 1. Download the FR Legends MOD IPA Before opening Scarlet, you need the modded game file. Search for a trusted source for the FR Legends MOD IPA Common mods include features like unlimited currency unlocked JDM car parts Save the file to your device's "Files" app. 2. Install the Scarlet App Install FR Legends MOD on iOS Using Scarlet -Ea...
Save the .ipa file to your or a cloud drive like Google Drive.
: You must wait for the Scarlet developers to update the app with a new certificate, delete the old Scarlet app, and reinstall it from their website. "App Verification Failed" If you try to launch Scarlet immediately, you
Under the "Enterprise App" section, look for the developer certificate name listed there. Tap the certificate name, then tap . Confirm by tapping Trust again in the pop-up window. Step 4: Sideload the FR Legends MOD via Scarlet
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. FR LEGENDS A GAME YOU SHOULD BE ADDICTED TO. | by Kunal : To reduce the risk of an automatic
Follow these stages carefully to get the game running on your device. Step 1: Install the Scarlet App on Your iOS Device Open the browser on your iPhone or iPad. Navigate to the official Scarlet website (usescarlet.com).
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