In your browser.
Try ideas against a backing loop.
Open Melody Sketch ↗The loop is ready.
Find the melody.
Generate a phrase. Shape the notes, bends and rhythm. Keep what works.
Try in browser ↗Download for Mac ↓ListenC minor · 100 BPM · 4/4
Audio starts when you press Listen.
How it works.
- 01
Choose your notes.
Set a scale or custom pitches in cents. Give grace notes their own pool.
- 02
Shape the phrase.
Generate, vary, or draw a bend. Adjust repetition, swing, meter and speed.
- 03
Keep what works.
Save ideas. Export the sine melody as WAV, or the notes and bends as MIDI.
Play it.
On your Mac.
0.5.0-beta.1AU · VST3 · standalone
Apple silicon & Intel
Beta: automated Mac checks passed. Hands-on Logic Pro and Ableton Live testing is pending.
Compatibility & checks ＋
Built for macOS 11+. Automated installation and plugin checks passed on macOS 15, on both Mac architectures. Older macOS versions remain unverified.
Set up.
Press Play.
- Open the instrument and press Play to enable audio.
- Choose your notes, then Generate. Set the tempo manually.
- Load a backing loop if you want to hear the phrase against it.
- Try Vary or Pencil, then export your idea.
AU on an instrument track.
- Close Logic and run the Mac installer.
- Reopen Logic. Create a software instrument track and choose Melody Sketch.
- Enable Run and Host sync, then press Play in Logic. No MIDI region is needed.
- Set your notes and phrase meter. Tempo follows the session.
Missing from the list? Rescan it in Logic’s Plug-in Manager.
VST3 on a MIDI track.
- Close Live and run the Mac installer.
- Reopen Live. Enable the VST3 system folder in plug-in settings and rescan.
- Add Melody Sketch to a MIDI track. Enable Run and Host sync, then start Live’s transport.
- Play your backing loop on another track. No MIDI clip is needed.
MIDI export is a file; this beta does not send live MIDI to another instrument.
Open it. Press Run.
- Open Melody Sketch from Applications.
- Select your audio output in the app’s audio settings.
- Set Tempo and press Run. Host sync starts off.
Uninstall ＋
Close your DAW. Remove Melody Sketch.app from /Applications, Melody Sketch.component from /Library/Audio/Plug-Ins/Components, and Melody Sketch.vst3 from /Library/Audio/Plug-Ins/VST3.
The idea.
Melody is more than a sequence of notes. It is how they arrive, move and leave space.
Melody Sketch turns those choices into controls, so you can explore a phrase before you know what to call it.
Under the hood ＋
Musical rules and a stored random seed choose timing, pitches, repetition and gestures from your settings. A sine oscillator follows each note’s pitch curve.
The graph, playback and export share one phrase model. Vary changes the phrase while protecting hand-edited curves. Generation runs locally.
Musical traditions ＋
A scale alone does not define a raga or maqam. Phrase grammar, tuning, ornament and performance matter too.
This beta offers parameters for exploration. It does not claim to reproduce every tradition authentically.
Help.
No sound? ＋
Check Melody level and your audio output. In the browser, press Play directly. In the plugin, enable Run. With Host sync on, your DAW must also be playing; switch it off to audition independently.
What are beat groups? ＋
They place accents within the meter. In 7/8, 2+2+3 means “ONE-two, ONE-two, ONE-two-three.” Groups must add up to the numerator. Tempo counts quarter notes.
What does WAV export include? ＋
One melody cycle, including bends, microtones, edits, swing, speed and current melody level. It excludes the click, backing loop and DAW effects. Tempo and level are captured when you export; changing automation is not recorded.
How do I preserve bends in MIDI? ＋
Use a monophonic instrument with a ±24-semitone pitch-bend range. Keep notes and bends on the same channel. Instruments can interpret bends differently; use WAV for the exact sine sound.
Does it detect my loop’s key? ＋
Not in this beta. Set the root and notes yourself.
Storage & privacy ＋
The browser stores up to 20 ideas locally. Clearing site data removes them. Backing audio stays on your device. Native ideas are stored in your DAW session; save it and export important ideas.
No analytics or account system is added to the site. Hosting may retain standard request logs.
Report a problem ＋
Include your system and DAW/browser version, settings and steps to reproduce the problem.
Reports are public and require a GitHub account. Leave out private project files.