Changelog

What's new in each release of PianoMuse. (Looking for BassMuse? BassMuse changelog.)

Version 1.4.0 — 2026-09-15

Copy an arrangement from another running plugin. When two or more Muse plugins are open in the same session, File → Copy arrangement from a running plugin lists the other open instances (by product, section name and a short id) and copies the chosen one's current arrangement straight into PianoMuse — no file to save or load. Sections, chords, meters, per-bar fills and feel come across; styles and note range are set to suit PianoMuse. The copy is a one-time snapshot, not a live link.

The “Import arrangement from another product” menu item is gone — it only ever reopened the same file chooser as Load Song. Load Song still opens BassMuse and RhythmMuse song files, so nothing is lost; the new live copy above is the quicker route between two open plugins.

Import an arrangement from another Muse product. A new File → Import arrangement from another product command — and loading any .bmsong or .rmsong through Load Song — brings a BassMuse or RhythmMuse arrangement into PianoMuse. Sections, chords, meters, per-bar fills and the feel dials all carry across. A bass or guitar style has no piano equivalent, so styles and the note-range clamp are reset to suit PianoMuse, and a short note names the product the arrangement came from so you can pick styles to taste. Write a progression once and voice it as piano, bass and guitar.
Songs remember their origin and restore their styles on the way home. A song now records which Muse product wrote it. Carry a PianoMuse arrangement into BassMuse or RhythmMuse and bring it back, and its original styles — per section, per bar and per chord — are restored rather than left on a fallback. Your own PianoMuse songs are unaffected, and songs from earlier versions still open exactly as before.

Load songs from any Muse plugin. File → Load Song now lists BassMuse, PianoMuse and RhythmMuse song files together. The arrangement format is shared, so a song saved from any of the three opens here — chords, sections and meters intact (each section falls back to a PianoMuse style).

Undo and redo for the arranger. Every change to a song — adding, deleting, reordering, renaming or duplicating sections; editing chords; changing a section's meter, key, mode, style or feel knobs; per-bar fills and mutes; dropping a MIDI clip in — can now be undone with Ctrl/Cmd + Z and redone with Ctrl/Cmd + Shift + Z (or Ctrl + Y on Windows). Undo and Redo are on the File menu too. Dragging a knob is a single undo step, not one per pixel. The history is per-session and resets when you load or clear a song; it isn't saved with the project.

Dropped chord clips set the section's meter to match. Drag a MIDI clip onto a section and PianoMuse reads its time signature, setting that section's meter so a 7/8 (or 5/8, 9/8, …) progression lands one chord per bar instead of drifting against a 4/4 section. When a clip carries no time signature — some tools, such as Scaler, never write one — PianoMuse infers an odd-eighth meter from the chord spacing (evenly spaced 3½-, 2½- or 4½-beat bars are read as 7/8, 5/8 or 9/8). Chords sitting on whole beats stay a plain 4/4.

The Licensed button is now green. A paid, activated license shows the header License button in green instead of amber, so “you own this” reads distinctly from an active trial, which stays amber. An expired trial and an un-activated plugin stay red.

Chords dropped into an odd-eighth-meter section land on the right bars. Dragging a chord clip onto a 7/8 (or 5/8, 9/8, …) section with the arranger grid set to 1/4 misplaced every chord after the first — they crept a beat later per bar and stray chords appeared — because chord detection measured a 3.5-beat bar as 4 whole beats. Detection now stays aligned in every meter and at every grid. This covers chords dragged from another Muse plugin and from other tools such as Scaler. Common meters were never affected, and exporting chords out to your DAW was always correct.

Update button placement. When a new version is available, the header's Update button now sits on the left, between Activation and Community — matching BassMuse, so both plugins' headers are consistent.

Odd time signatures (7/8, 5/8, 9/8, …) now behave exactly like the common meters. A few places still measured a bar by its rounded length, which only affected odd-eighth meters: playback no longer sounds notes past the last bar, chords dragged to your DAW land on the right beats, Follow-MIDI uses the exact bar length, and older songs that stored a bar as evenly-split chords load correctly. Common meters (4/4, 3/4, 5/4, 12/8, …) were never affected.

Playback cursor reaches the end in odd/mixed meters. In 7/8, 5/8, 9/8 and similar meters the moving cursor could stop short — parked inside the last measure while playback ran on to the end. It now tracks the grid exactly and reaches the end in every meter. (Audio was always correct; this was the on-screen cursor.)

Per-section Mode. Each section gets a Mode selector — Inherit (default) plus Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian and Locrian. It re-colors that section's connective notes (the walks, approaches and passing tones between chord tones) relative to the song's tonic while leaving the chords you typed untouched — so a Lydian chorus passes through F♯ where an Ionian verse passes through F. Needs a known song key.
More time signatures. The meter picker now offers the full set — 4/4, 3/4, 2/4, 5/4, 6/4, 7/4, 2/2, 3/2, 6/8, 9/8, 12/8, 7/8 and 5/8. Odd-eighth meters play at their true length (7/8 = 3.5 beats, etc.).
Drop a MIDI clip onto a target of your choice. Dragging a .mid onto the arranger now asks where its detected chords should land — the whole song, the selected section, the section (or measure) you dropped on, or a brand-new section at the end (with its own time signature). If the clip is longer than the target, it offers to clip or extend.
Capture chords from live MIDI. File menu ▸ Capture chords from MIDI (arm, then play): arm it, play a chord track into PianoMuse over the transport, and when you stop it detects the chords and fills the song — the workaround for DAWs that block the drag-in.
Manual-install option (Windows). If the installer won't run on your PC, there's now a VST3 ZIP you can drop in by hand.

Odd time signatures line up correctly. In 7/8, 5/8 and other odd-eighth meters the arranger grid drew bars a half-beat too wide, so dragged or captured chords (and the grid itself) landed on the wrong beat. The timeline and the MIDI-import math now use the exact bar length.
Install README wording. The bundled README now describes PianoMuse as a two-hand piano & organ generator, not a bass-line generator.

PianoMuse arrives. A two-hand piano & organ generator that follows your chords — the same deterministic engine, chord grid and MIDI drag-out as BassMuse, now for keys.
Two independent hands with real voicings and a genuine sustain pedal (CC64), across 20 piano & organ styles.
Shared song format with BassMuse — arrangements move freely between the two plugins.
VST3 & Audio Unit for Windows & macOS; a license covers up to 3 machines with self-service deactivation.