RapidComposer Version History

Check the recent changes since v6.0


October 8, 2025: v6.0

  • Neural Phrase Engine: generate or continue phrases and multi-track compositions using local AI models trained on MIDI data. Available in the full edition.
  • New LIVE mode: trigger and perform sections of your composition from a MIDI keyboard in real time, with per-track speed, transpose, and timing controls. Available in the full edition.
  • Two master tracks (A and B) for experimenting with chord progressions; you can copy one track to the other or just selected chords.
  • Each track can be assigned to master track A or B
  • SFZ instruments supported; SoundFonts/SFZ page redesigned
  • Note editing completely reworked: click to create, double-click to remove, Ctrl-click to select, Alt-click to split/glue notes.
  • Alt key shows scissors/glue cursor over notes, phrases, or chords
  • Click-and-hold on the timeline scrolls horizontally and zooms vertically
  • New chords menu with operations on multiple chords: glue chords, change triad type, add/remove chord tones (5th–13th)
  • Improved timeline selection editing with better visual indication
  • Progress indicators when loading compositions and SFZ files
  • Note length editing added to Rhythm Lab which makes it even more flexible
  • New setting: 'Note editing with mouse' (the default tool is the pencil, so you can create notes immediately without pressing Ctrl)
  • New setting: 'Note creation' (dragging during note creation can transpose the note)
  • New setting: 'Show snapped position' (during note editing the snapped position is shown)
  • 'Fill chords' menu added to master track inspector, useful for setting up live playback chords
  • Master and soundfont gain levels are in dB
  • Minor UI cosmetic changes