Melody Generator
A random melody generator that follows music theory: choose a key and scale, generate a melody in two-bar phrases, play it, and download the MIDI. No account.
Free and unlimited, no account needed. Each melody is written in two-bar phrases and ends on the root note.
C major · 4 bars · 100 BPM
G4 C5 B4 G4 | D4 E4 D4 C4 C4 | D4 C4 C4 D4 | C4 E4 C4 E4 C5
Open the MIDI in any DAW or the MIDI Editor, add chords with the Chord Progression Generator, or find a scale with the Scale Finder.
How to generate a melody
- 1
Choose a key and scale
Pick the key and a scale such as major, minor, pentatonic, blues, Dorian or Mixolydian. Set the range to one or two octaves and the tempo in BPM.
- 2
Set the length and rhythm, then generate
Choose 2, 4 or 8 bars and a simple, medium or busy rhythm, then select Generate a new melody until you hear one you like. The piano roll and note names update with each one.
- 3
Play it and download the MIDI
Select Play to hear it, then Download MIDI to open it in a DAW or the MIDI Editor, where you can change notes or pick another instrument.
How the melody generator writes a melody
- It stays in the scale. Every note comes from the key and scale you choose, so nothing sounds wrong.
- It moves mostly by step. Most notes move to a neighboring scale note; after a bigger leap, the next note steps back the other way, as singers and songwriters tend to do.
- It repeats a rhythm. The second two-bar phrase reuses the first one’s rhythm, and an eight-bar melody brings its first two bars back in bars 5 and 6, which makes it easier to remember.
- It lands on chord tones. Each phrase ends on the root, third or fifth, and the last note is always the root, so the melody sounds finished.
It is a rule-based random melody generator, not an AI model: each melody is new, but it follows the rules above. For a complete song with vocals, use the AI song maker.
Which scale to pick
| Scale | Mood | Try it for |
|---|---|---|
| Major | Bright, happy | Pop hooks, children’s songs, jingles |
| Natural minor | Sad, serious | Ballads, film cues, trap melodies |
| Major pentatonic | Open, simple | Folk, country, easy singalong hooks |
| Minor pentatonic | Bluesy, cool | Rock riffs, hip hop loops, lo-fi |
| Blues | Gritty | Blues and funk licks |
| Dorian | Minor but hopeful | Funk, jazz, house |
| Mixolydian | Major with an edge | Rock, country, jam bands |
| Harmonic minor | Dramatic, exotic | Classical-style themes, metal, flamenco flavor |
What to do with a generated melody
Use it as a starting point: sing it over a beat, change a few notes until it sounds like yours, or play it on an instrument in a DAW. Add chords that fit with the Chord Progression Generator, edit the notes in the MIDI Editor, or work out the scale of a melody you already have with the Scale Finder. To turn an idea into a finished song with vocals, describe it in the AI song maker.
Frequently asked questions
How do I generate a melody?
Choose a key, a scale, a length and a rhythm above, then select Generate a new melody. Play it, and download the MIDI when you like it.
Is the melody generator free?
Yes. It runs in your browser with no account and no limits, and the MIDI files are yours to use.
Can I download the melody as MIDI?
Yes. As a MIDI melody generator, it saves a one-track MIDI file at your tempo, ready for any DAW, notation app or the MIDI Editor.
Is it an AI melody generator?
No. It follows music theory rules with a random seed, so it is fast and free. The AI song maker is the AI tool for full songs with vocals.
Can I make the melody longer?
Choose 8 bars for a full phrase pair, or generate several 4-bar melodies in the same key and join them in your DAW.
Will the same settings give the same melody?
Changing the key, scale, length, rhythm or range rewrites the current melody with the same random seed. Select Generate a new melody for a different one.
Updated October 31, 2026 · Written and reviewed by the Songluna AI team
Turn your melody into a song
Describe the song you hear in the AI song maker. New accounts get 8 free credits.