Browser tool · no upload
Shape a three-oscillator synth, write a melody in the piano roll and download it as a WAV of your sound or a MIDI file of the notes.
Saved in this browser only. Each save keeps the notes, tempo, meter, length and the full 3xOsc voice.
No notes yet.
WAV renders the melody through the voice you designed. MIDI contains only the notes, tempo and meter, so your DAW instrument decides how it sounds.
How it works
Press Audition C4 while you move the controls. A saw with a square one octave down and a slightly detuned sine is a good starting lead.
Click the timeline to choose where playback starts. Ctrl or Command with the scroll wheel zooms around the pointer. On a phone, switch to Scroll to pan the grid.
Use the WAV as a sample or bounce. Use the MIDI to keep editing the notes with a different instrument in your DAW.
Common questions
It is a subtractive synthesizer built from three oscillators that play together. FL Studio ships a well-known one. Detuning the oscillators against each other, or setting one an octave lower, thickens a simple waveform into a lead, bass or pad.
The WAV is audio: the melody rendered through the voice you designed on this page. The MIDI file contains only notes, timing, tempo and meter. When you import it into a DAW, the instrument you assign there decides how it sounds.
Browsers, and Safari on iPhone and iPad in particular, only allow sound after a tap or click. The first button you press creates and resumes the audio engine. After that, every control responds immediately.
No. Synthesis, the piano roll and both exports run entirely in this browser. Your current melody and anything you save to My melodies are kept in local storage on this device. Download a library backup to keep a copy or move it to another browser.
Up to 160 bars. The piano roll only draws the part of the grid you can see, so long arrangements stay responsive. Rendering a long WAV takes a few seconds.
Wrap folds the release of the last notes back onto the start, so the file loops cleanly in a sampler or DAW at exactly the song length. Cut drops the tail. Keep leaves it on the end of the file.