RapidComposer is a rapid music prototyping software designed for composers, song-writers and musicians of all musical styles.

Features:

• Unique non-destructive, phrase-based music composition.
• Advanced tools for phrase editing, phrase morphing, phrase generation, phrase grouping, motif development, chord progression editing.
• Timeline with chords (absolute or chord functions) which all phrases automatically conform to.
• Piano roll with scale notes, visually editable chord notes, and smart arranging of overlapped notes in two styles.
• In-place non-destructive phrase-level and note-level editing.
• Sophisticated MIDI CC editing and recording.
• Articulations can be assigned to phrases or even individual notes.
• Extensive scale, chord, guitar chord, chord progression databases.
• Movable, resizable and transposable smart phrases that always conform to the current chord.
• Phrase and rhythm generators help you to create thousands of musically useful (not random) phrases.
• Taggable instrument database of all MIDI, VSTi and SF2 presets in one place.
• Variations can be applied to phrases, or whole tracks.
• IdeaTool that can generate a multitrack composition based on the provided parameters and rules.
• Intuitive drag and drop environment (you can drop chords, progressions, phrases, instruments to the composition).
• Fully customizable user interface with preset themes.
• Unlimited undo and the ability to make several versions of the same composition.
• MIDI drag-and-drop tracks or composition to DAWs.
• Virtual instruments (VSTi v2.4 plug-ins) support.
• SoundFont (.SF2) support.
• Standalone and VST version with 128-channel MIDI output.
• Available for Windows and Mac OS X (VST version is available only for Windows at the moment).