Melody Generator & MIDI Maker.
Generate a reproducible monophonic melody, edit every step, hear a simple synth reference and export real MIDI, exact-frame WAV, MP3 or JSON — without an upload.
MUSICAL GRID MAP
Seeded Melody Roll
Connect detected or generated events to a musical grid. Pitch, rhythm and harmony become useful only when event timing, confidence and editable musical labels stay visible together.
Open the full signal breakdownBest source, processing logic, limits and three-pass listening check
- Scale and contour
Start with the right material
Sketching a lead line, creating a practice phrase, exploring a scale or moving a small melodic idea into a DAW without recording audio first.
- Generate editable notes
Understand the transformation
Seeded musical rules choose scale degrees and durations inside the visible range and meter, then the editor applies explicit pitch, rest, velocity and duration changes before playback or export.
- Melody MIDI
Verify the usable result
A piano-roll and note-list sequence with local synth preview plus Standard MIDI File format 0, exact-duration WAV/MP3 and JSON exports.
Where this workflow stops
This is a rule-based composition aid, not AI songwriting. It creates one monophonic draft, does not guarantee originality or musical quality, and leaves arrangement, sound choice and authorship decisions to the musician.
Make the final decision by ear
- Confirm tempo, downbeat and key before trusting labels.
- Review low-confidence events by ear and correct them manually.
- Import the result into its target instrument or DAW before committing.
How to generate and export a melody
- Set the musical grid. Choose a key, scale, tempo, time signature, bar count, rhythm division and pitch range.
- Shape the generator. Set note density, contour, repetition, rest chance and a seed, then select Generate melody.
- Edit and preview. Change pitch, rest state, velocity or duration in the step list, then use Play to hear the simple local synth reference.
- Export the sequence. Download a Standard MIDI File format 0, exact-frame WAV, locally encoded MP3 or JSON receipt from the visible sequence.
A melody sketcher, not an AI songwriter
This generator applies conventional musical rules to a seeded random stream. Scale membership limits the available pitches, contour supplies a broad direction, and the rhythm, density, repetition and rest controls decide how the step grid is populated. A seed makes the result reproducible; it does not prove originality.
The synthesized preview is intentionally plain. It lets you check notes and rhythm before assigning an instrument in a DAW. All generation, edits and exports run locally in the browser. MP3 uses a same-origin local encoder and can contain normal codec padding; WAV has the exact calculated frame count.
Melody Generator vs chord and audio analysis tools
- Melody Generator
- Creates one note at a time from selected scale, grid and seed rules. Use it to sketch a lead, hook or practice line.
- Chord Progression Generator
- Creates simultaneous notes as named chords and harmonic progressions. It is for harmony, not monophonic lead lines.
- Audio to MIDI
- Analyzes an existing input recording to estimate notes. This melody generator does not listen to a file or infer a performance.
Export timing and safety limits
MIDI is written as Standard MIDI File format 0 on a 480 PPQ grid. Tempo, 4/4 or 3/4 time signature, note velocity and edited durations come from the visible sequence. WAV rendering uses exactly 48,000 sample frames per second for the full bar duration, including trailing rests. JSON preserves the settings, mutation number and every visible step for an auditable receipt.
Bounds: 1–16 bars, quarter/eighth/sixteenth grids, at most 256 visible steps, at most 256 note events and a maximum exact render of 4,608,000 stereo frames. Cancelling a render discards partial audio. Changing a generation setting marks the current result stale until it is regenerated.
Melody Generator & MIDI Maker: quick answer and technical limits
Quick answer: A deterministic monophonic melody generator that turns key, scale, contour, range, rhythm, repetition, rest and seed controls into editable notes.
- Best for
- Sketching a lead line, creating a practice phrase, exploring a scale or moving a small melodic idea into a DAW without recording audio first.
- How it works
- Seeded musical rules choose scale degrees and durations inside the visible range and meter, then the editor applies explicit pitch, rest, velocity and duration changes before playback or export.
- What you get
- A piano-roll and note-list sequence with local synth preview plus Standard MIDI File format 0, exact-duration WAV/MP3 and JSON exports.
Know before you use it: This is a rule-based composition aid, not AI songwriting. It creates one monophonic draft, does not guarantee originality or musical quality, and leaves arrangement, sound choice and authorship decisions to the musician.
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