Music Developments Rapid Composer 4 v4.6.0 / v4.3.3 WiN MacOSX

RapidComposer is a unique, non-destructive, phrase-based music prototyping software designed for composers, songwriters and musicians of all musical styles (for Windows and macOS: standalone, VST, VST3, AU, AU MFX).

Music Theory Integrated
Create great sounding chord progressions, use piano-style phrases even if you've never touched a piano, auto-harmonize melodies, get chord suggestions, load MIDI files with chord detection, use the chord palette or the "circle of fifths" chart, RapidComposer will always assist you in songwriting.

Smart Phrases
Phrases always conform to the current chord and scale on the master track. Forget about tinkering with notes. Lay out the chords on the master track, or just drop a chord progression on it, with a key-press you can generate a harmony track with perfect voice leading. Start composing now!

Phrase Generators
Rhythm and phrase generators are included for various purposes. Create monophonic or polyphonic patterns. Generate melody. Use variations to change phrases non-destructively. Slice or change the rhythm of existing phrases.

Flexible Chord Selection
RapidComposer offers several ways to select chords for the master track or chord progressions including Tonnetz and Circle of Fifths. Color chord buttons by consonance, common notes, tonality or suggestions. Set up chord rules for progressions. Use chord voicings for tracks, phrases or master track chords.

Idea Tool
RapidComposer will generate a multi-track composition with chords based on your settings, using your phrases. Different types of workflows are supported. Not just when you are out of ideas.

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