27.3.9

Jun 23, 2026

• NEW

  New credits page! Click the moon

• NEW

  Add a “Bells & Metals” preset category with 5 new bells

• NEW

  Added 6 presets used in the launch video (thx @modulatia!)

• NEW

  Move to continuous MTS-ESP retuning with MPE pitch-bend interpolation (thx @jl and @andreya)

• NEW

  Double-click to reset the real time visualizer on the Voices tab (thx @trajectoire)

• PERF

  Synth oscillators now use up to ~33% less CPU on Apple Silicon and ~44% less on Intel Macs and Windows.

• PERF

  Additive Reverb now uses ~33% less CPU on all platforms.

• FIX

  Fix unison voice stealing so new same-pitch notes keep their full voice group while older tails are stolen first. (thx @bells)

• FIX

  Fix undoing a main envelope slider now preserves prior per-harmonic Edit Harmonics adjustments (instead of undoing both changes at once) (thx @trajectoire)

• FIX

  Fix: non-selected harmonics now reset to 0ms instead of 500ms when toggling Curve Affects for Release (thx @bells)

• FIX

  Fix mono/preset-load re-trigger ownership so held notes can’t leave stale or stuck voices.

• FIX

  Fix same-pitch note releases so older release tails keep fading naturally.

• FIX

  Fix a potential crash in Bitwig when closing plugin windows (introduced in 27.2).

• IMPROVED

  When volume bars are dragged to or below 0, they now snap cleanly to 0 vs. “bounce” on the baseline.

• FIX

  Fix a keyboard accessibility focus ring showing up on the Filter XY when used with the mouse (thx @bells)

• FIX

  Fix pressing enter on the Filter XY opening the filter selector

• FIX

  Fix various buttons having unhelpful help entries (thx @bells)

27.2.30

Jun 15, 2026

• FIX

  Fix envelope tooltip not following the value when you undo while hovering a control (thx @bells)

• FIX

  Restore the missing Affects All / Odd / Even / Octave labels in the curve detail panel (thx @philippe)

27.2.23

Jun 15, 2026

This is the @bells QA 27.2 special.

• NEW

  6 new presets by BJM (@bells).

• NEW

  Expose new parameter Harmonic Slew Ms in Settings that lets you rate limit how fast harmonics can change.

• NEW

  Nicer settings page, with licensing information and the ability to reveal the license file, reveal settings, and get help.

• NEW

  Show visualizers in “Save As,” as long intended.

• PERF

  Max Harmonics now reduces CPU usage as expected (lowering it from 511 to 36 cuts synthesis cost by ~5x on lower notes).

• PERF

  Waveform visualization on Page 1 is now both higher detail and renders up to 16x faster.

• IMPROVED

  Very lightly smooth edge case click-y artifacts that can appear when using the square trem shape at full depth.

• IMPROVED

  Very slightly smooth edge case click-y artifacts that result from harmonics entering or exiting instantaneously.

• FIX

  Fix volume bar click locations landing slightly below the cursor since last release (thx @bells)

• FIX

  Fix case where notes fail to fire note off when One Shot is enabled and sustain is changed mid-note (thx @bells & @trajectoire)

• FIX

  Fix an edge case where the dry signal dies when the verb is starved completely at high mix percentages (e.g. reverb set to evens-only on an odd-only preset) (thx @bells)

• FIX

  Fix a rare case where notes pitched above nyquist could produce a brief burst of leftover audio instead of silence.

• FIX

  Fix Pitch Rate and XY controls sometimes appearing enabled when the Pitch page is disabled (thx @bells)

• FIX

  Fix issue in last release where spacebar was being used in addition to “return” for keyboard accessibility, undesirable in DAW contexts (thx Jay)

• IMPROVED

  Show 2 significant digits in Stiffness tooltips (thx @bells)

• FIX

  Fix a bunch of manual links.

27.1.96

May 26, 2026

• NEW

  Linux support (beta).

• NEW

  Offline licensing support using the Moonbase offline flow (you’re welcome, KVR).

• NEW

  Volume Bars: added the reflection back as well as a subtle bounce-n-settle to volume bar dragging (lemme know if you hate it?).

• IMPROVED

  Improve UI and visualizer responsiveness to automation changes when DAWs like BitWig repeatedly send the same parameter value as a “change.”

• A11Y

  Make all activation flows keyboard accessible.

• A11Y

  Make volume bars and filter keyboard accessible.

• A11Y

  Announce preset changes to screen readers.

• A11Y

  Fix keyboard focus rings not appearing for header icons and many other places around the app.

• A11Y

  Improve focus grouping and ordering of keyboard focused elements when using Tab and SHIFT-Tab.

• FIX

  Fix potential crash in VSTs when resizing Standalone (debounce saving settings to disk).

• IMPROVED

  Settings modal no longer obscures live help.

27.1.33

May 14, 2026

• NEW

  Trem Visualizer now animates between settings (let me know if it makes you dizzy)

• NEW

  Add new friendly and dismissible tip for MIDI panic when notes are being held after note-off

• PERF

  Improve Trem Visualizer performance by 5x baseline on macOS and 20x on Windows

• IMPROVED

  Improve Trem Visualizer artifacts

• PERF

  Improve general Windows UI performance substantially

• FIX

  Fix potential startup race condition crash (thx @bells)

• IMPROVED

  Improve tooltip “show” consistency and timing (thx @bells)

• IMPROVED

  Clear tooltips when moving between pages (thx @bells)

• IMPROVED

  Reduce frequency of alert when navigating presets: “Move pattern amount to introduce the shape”

27.1.1

May 5, 2026

• NEW

  2 new presets from @modulatia

• NEW

  11 new presets from @Trajectoire

• NEW

  New Preset search!

• NEW

  Right-click or cmd/ctrl-click to type in values in “Edit Harmonics” advanced mode

• PERF

  More than 2x audio speedup on Intel Macs

• FIX

  Fix Sustain envelope slider tooltip to show accurate values in dB (thx @Nicolas)

• FIX

  Prevent licensing server from sending network requests during plugin scanning.

• FIX

  Fix an issue where single harmonic patches could show “artifacts” in a spectrogram due to the volume compensation pushing them slightly into the soft clipper.

• IMPROVED

  Auto-migrate trial users to a paid license if one is available (thx Tobias!)

• IMPROVED

  Allow Trial users to explicitly click “Activate!” from in the app to buy / use a license

27.0.50

Mar 14, 2026

• IMPROVED

  Voice handling improvements. Changing the number of unison voices while holding notes down will now dynamically add/remove voices.

• FIX

  Fix MIDI keyboard issue leading to a crash in FL Studio Windows (thx @mleuc)

• IMPROVED

  Disable harmonic slew which was experimentally re-enabled last release, as it may result in differences in sounds at higher trem rates (more testing required).

27.0.40

Feb 13, 2026

• NEW

  Voices visualizer: Improve visibility and brightness, especially on noisy patches.

• NEW

  Turn main volume up and down 1db increments with keyboard shortcuts + and – from anywhere in the app.

• NEW

  Random Trem Pattern will now load the exact same pattern on successive plugin re-opens / preset loads.

• NEW

  Midi Keyboard: You can now use z to transpose up an octave and x to transpose down an octave, ala Ableton/Logic (thx @Xavier (aka Joe Chip) and @bells).

• IMPROVED

  Midi Keyboard: Don’t trigger midi notes when ctrl/cmd/alt are held (thx @philippe – trajectoire)

• IMPROVED

  Voice visualizer: When the actively visualized note is released and another is sustaining, the visualization now transfers focus to the sustaining note.

• IMPROVED

  Voice visualizer: Volumes between -96db and -60db are now visualized.

• IMPROVED

  Move the “tick” of bipolar sliders under the slider thumb where it belongs.

• FIX

  Resolve issue introduced in v27 where loading presets with Random Pattern Shape would not respect boutique (json specified) tremOffsets.

• FIX

  Resolve preset loading issue where some presets with boutique json values would load differently when using Duplicate Track in Ableton (thx @bells).

• FIX

  Resolve preset loading issue issue where trem visualizer would occasionally not update with values from the json.

27.0.22

Feb 7, 2026

• NEW

  Standalone: New MIDI Keyboard support. Play musical notes with your computer keyboard. Try holding down A D and G in the home row to play a C Major chord. This feature also works with alternate keyboard layouts like Dvorak.

• NEW

  Standalone now polls for new midi devices and auto enables them. Disabled devices are remembered across sessions and will not auto-enable.

• NEW

  New Minor 9 Chord preset that demos using chord tones as partials + max harmonics (for reals this time)

• IMPROVED

  Peak meter now alerts when synth output is equal 1.0 as well as over 1.0 (thx @trajectoire)

• FIX

  Fix bug with Standalone not re-enabling a MIDI keyboard that was unplugged and plugged back in (thx @trajectoire)

• IMPROVED

  Standalone: Improve Audio and MIDI window styles to look more Sine Machine-y

• FIX

  Fix issue introduced in v27 preview with trem/pitch rates not loading in properly from json (thx @trajectoire)

• FIX

  Fix issue introduced in v27 preview with verb json values falling back to incorrect default preset values (thx @bells)

• IMPROVED

  Migrate all factory presets to v27

27.0.7

Jan 29, 2026

New major version. Shows up as a new separate plugin in the DAW, v27.

• NEW

  New feature: Max Harmonics is a new parameter, available in the UI on the Voices tab. When Max Harmonics is set below 36, it will also disable the relevant harmonic volume bars on the first page. (thx Florian)

• NEW

  New triangle Trem pattern shape.

• NEW

  Trem shape invert lets you invert the ramp, triangle and sine shapes.

• NEW

  When pitchMapping is edited in the json to make partials non-harmonic, the altered tuning ratios are displayed in the help text when hovering over volume bars (thx @jl)

• NEW

  Added colorblind friendly clip/over warning animation on the volume slider (thx @nicolas)

• NEW

  When editing patch volume, value is shown in db (thx @jl)

• NEW

  New Minor 9 Chord preset that demos using chord tones as partials

• PERF

  Pitch modulation performance improvement across all platforms

• PERF

  Slight Oscillator performance improvement across all platforms

• IMPROVED

  Renamed Trem Offset to Trem Pattern and auto-migrate old presets with original naming.

• IMPROVED

  Manually edited trem and pitch json data is now properly loaded as-is like envelope data is (vs. overwritten by parameter calculation) (thx @joechip)

• IMPROVED

  When One Shot is enabled and notes are played and released, turning One Shot off now behaves as note off, preventing stuck notes (thx @crpxl)

• FIX

  Fix being able to use SHIFT on bi-polar sliders (thx @jl)

• FIX

  Fix curve details button not having a visible keyboard focus ring and explicitly specify their focus order (thx @jl)

• FIX

  Fix One Shot and Relative Mode having clipped focus rings in the UI.

• FIX

  Fix up/down arrow keys sometimes being sketchy in preset browser (thx @bells)

• FIX

  Fix text/icon selector discrepancy edge case where it will show an outdated value (thx @trajectoire)

• FIX

  Fix Trem Visualizer jank — uneven spacing between harmonics, especially when resizing.

• FIX

  Fix cmd-F should not undo on macOS. (thx @bells)

26.1.0

Dec 28, 2025

• NEW

  18 new presets by Trajectoire, Diskette and Modulatia

• NEW

  Re-order factory presets by alpha in each category (thx @philippe)

• FIX

  Fix a distortion issue that can appear in edge cases where only 1 or 2 of the upper harmonics > H30 exist (thx @nicolas)

• FIX

  Fix a subtle behavior where some one-shot patches with sustain at 0 can take too long to finish / be killed.

26.0.34

Dec 1, 2025

• NEW

  New “dewdrops” preset by new contributor @modulatia

• NEW

  Allow for unison spread to change while a note is being held (thx Arden)

• NEW

  Update url now goes to https://melatonin.dev/downloads where a public changelog is available

• FIX

  Fixes crash when Bluetooth MIDI is clicked in Standalone (thx @bells)

• FIX

  Fixes Pitchbend range for both MIDI 1 and MPE controllers (thx @jl)

• FIX

  Fixes Decay/Hold/Release help text for Low To High and High To Low (thx Julian)

• IMPROVED

  Update JUCE to 8.0.11

26.0.23

Nov 18, 2025

• FIX

  Fixes “right channel drops out” issue reported by @James Swift, @Enchse and others

26.0.22

Oct 31, 2025

• NEW

  Footer visualizer now stays at full brightness when preset browser is open

• FIX

  Fix keyboard text input issue in Logic Pro

26.0.20

Oct 28, 2025

• NEW

  New patches from DATABROTH’s stream

• IMPROVED

  More launch day fixes to initial DAW state loading.

• IMPROVED

  Advanced sustain values now always show correctly at first DAW load.

early access launch!

26.0.16

Oct 27, 2025

• IMPROVED

  When opening up a saved project containing sine machine in a DAW, some patches containing individual changes to the harmonics would not load properly. This is now fixed (thx Matthijs and Enrico)

• IMPROVED

  On first load, ensure “Advanced” view has proper formatting with labelled units.

• IMPROVED

  Add ability to run a 10s perfetto performance trace from settings.

26.0.4

Sept 20, 2025

• NEW

  New/updated presets by @DATABROTH (still going through some of em!)

• NEW

  Resizing the plugin now scales the interface, keeping the aspect ratio. User Interface size/dimensions are stored and recalled globally across sessions

• IMPROVED

  Improve and smooth performance profile for low notes with lots of harmonics (thx @Mitch Schneider)

• IMPROVED

  Small UI tweaks

26.0.1

Sept 10, 2025

New major version. Shows up as a new separate plugin in your DAW, v26.

• NEW

  New gaussian Bandpass filter type

• NEW

  New soft-clipper and limiter. This is behind the scenes (at least for now) to help out with “mastering” presets and UX in general.

• NEW

  15+ new presets (thx @mleuc, @Mitch Schneider, @Andreya)

• NEW

  Reverb level is now a mix slider and can go 100% wet. This is a breaking change. Factory presets are updated. Your user presets will auto-convert but you still might need to bump the reverb mix level UP for patches with unison voices.

• FIX

  Correct totally embarrassing MIDI note timing issues on larger block sizes (thx @Mitch Schneider)

• IMPROVED

  Improve unison volume compensation (thx @Mitch Schneider). This is impossible to be perfect due to so many factors, but the compensation now depends on spread values.

• IMPROVED

  Volume now goes up to +20 db (was +15db)

• FIX

  Fix voice handling bug where only a subset of unison voices fire on note-on (when all voices were utilized).

• IMPROVED

  Improve reverb performance, especially for patches with unison.

• IMPROVED

  Improve performance of noise algorithms on macOS 12 and above.

• IMPROVED

  Ensure the very first note after start of instrument actually glides when using rel/abs glide

• IMPROVED

  Add hover states for both text and icon selectors

25.0.27

Aug 22, 2025

• NEW

  New draft patches from @mleuc!

• NEW

  Triangle trem visualization finally displays sharpness and looks decent now

• FIX

  Fix crash that could happen with very low frequencies hitting the reverb (thx @mleuc)

• FIX

  Fix infs that can occur on Windows with frequencies way above nyquist (thx @mleuc)

• IMPROVED

  Improve reverb algorithm to better account for frequencies above nyquist and below its lower bound.

• FIX

  Fix footer visualizer help text and let user know they can PANIC.

• IMPROVED

  Free modes renamed to Hz

• IMPROVED

  When sliders are disabled and grayed out, their labels now are too

• IMPROVED

  Add glide mode label.

• IMPROVED

  Clean up the text selectors, reduce font size and move them to small caps

• IMPROVED

  Allow utf-8 in the UI labels and help text (ENV→TREM etc)

• IMPROVED

  When odd/even selectors are disabled they are now grayed out