Scale and key selection
Choose the musical scale and key to set the tonal center before generating a melody.
MIDIGEN is a web-based MIDI melody generator and chord progression tool for musicians, producers, and beatmakers. Create original MIDI files with no sign-up, ready for DAW editing.

MIDIGEN is a web-based MIDI melody generator and chord progression tool for musicians, producers, and beatmakers. It creates original MIDI output using scale, key, tempo, and complexity settings so users can turn an idea into an editable musical sketch quickly.
The site positions MIDIGEN as a practical composition helper rather than a sample library. It emphasizes royalty-free MIDI output, no sign-up, and export-ready files that can be dropped into a DAW for further editing, arrangement, or sound design.
Choose the musical scale and key to set the tonal center before generating a melody.
Set the number of bars, tempo, and note duration to shape the length and pacing of the result.
Optionally include rests, chords, and arpeggios to add variation and harmonic detail.
Generate original MIDI output that the site says is royalty-free and editable in a DAW.
Export clean MIDI files for drag-and-drop use in common digital audio workstations.
Use the site without signing up; the home page says there are no subscriptions, limits, or watermarks.
Generate a melody or chord progression quickly when starting a track and you need a harmonic idea to build from.
Create royalty-free MIDI sketches that can be edited, rearranged, and assigned to different instruments inside a DAW.
Experiment with scales, keys, tempo, and note duration to compare how small parameter changes affect the musical result.
Use the output as a teaching or demonstration aid for chords, arpeggios, rests, and other composition concepts.
Produce original MIDI ideas for pop writing, game scoring, or other projects that need a flexible starting point rather than finished audio.
MIDIGEN generates royalty-free MIDI compositions that can be used without external API dependence, and the site states there is no sign-up required.
The user guide says generated MIDI can be dragged into DAWs such as FL Studio, Ableton, Logic Pro, GarageBand, Pro Tools, and Cubase.
The source describes controls for scale, key, bars, tempo, note duration, rests, chords, and arpeggios. It does not describe a separate pricing page, and the pricing URL currently returns a 404.
MIDIGEN is presented for music producers, beatmakers, musicians, and enthusiasts who want original MIDI ideas, chord progressions, or practice material for composing.
The attributions page lists soundfonts and open-source libraries used by the site, including MIDI.js soundfonts, Three.js, Tone.js, Tone.js MIDI, and Soundfont Player.