Melody Generator AI — Describe The Shape
Say what shape the line should trace and who carries it, and hear the melody performed — a sung topline with words on it, or a single instrument playing the idea with nothing else in the way.
Most of them generate melodies as MIDI: a line of notes you load into a digital audio workstation, edit in a piano roll and assign to an instrument. This one does something different and it is worth knowing which you want. Here the melody arrives already performed, as finished audio, either sung with words or played by an instrument you named. There is no MIDI export and no key, scale or tempo control. What you get instead is speed and the ability to hear a line rather than read it, and if it is a vocal topline, to hear whether the words actually sit on the melody, which notes alone will never tell you.
15 free credits on signup — enough for one complete track with cover art. No card required.
Eight Melodic Shapes You Can Ask For By Name
You cannot type notes here, but you can describe a contour, and contour is the part listeners actually retain. Each of these is a different thing to ask for and a different kind of line.
Stepwise
Adjacent notesMoves to the neighbouring note almost every time. Easy to sing, which is why folk melodies and anthems are built this way.
Leaping
Wide intervalsJumps several notes at once. More distinctive and more memorable, and considerably harder for anyone to sing back.
Arch
Up then downRises to a high point partway through and falls away after it. The default shape of a satisfying phrase.
Descending
High to lowStarts at the top and settles downwards. Reads as resignation or release rather than as effort.
Repeated note
Rhythm carries itStays on one pitch and lets the rhythm do the work. Speech-like, and unusually sticky as a hook.
Sequence
Shape movedThe same short figure repeated a step higher or lower each time, which builds without introducing anything new.
Call and response
Phrase and answerA line that poses something and a second that answers it, often ending lower. Leaves natural space to breathe.
Narrow range
Within a few notesConfined to a small span so anybody can join in. What chants, terrace songs and singalong choruses are made of.
How to Generate a Melody in 3 Steps
Shape, then who performs it, then compare a few.
Describe the shape
Rising, falling, arched, leaping, stepwise, or staying on one note. Contour is what listeners remember.
Say who plays or sings it
One instrument, or a voice with words. Rule out everything else if you want the line exposed.
Generate a few and compare
Same brief, different contours. Hearing them is faster than notating them, which is the point.
A Contour Beats The Word Catchy
Catchy and memorable describe the outcome. A shape, a range and an instrument describe the line you want to hear.
“A catchy melody.”
“Instrumental piece with a single clean electric guitar playing one melody and nothing else at all, no drums, bass, pads or harmony, the line arching upward across the first four bars to a high point then stepping back down, staying within one octave, phrases separated by a full bar of silence, repeated three times unchanged.”
“A memorable vocal hook.”
“Write and sing a song whose chorus melody stays on one repeated note for the first two bars and lets the rhythm of the words carry it, then leaps up a wide interval on the final word and holds it on an open vowel, narrow range everywhere else, the same phrase repeated four times, female vocalist forward and close.”
“Something people can sing along to.”
“Write and sing a chorus with a deliberately narrow range of about five notes, moving stepwise to adjacent notes with no wide leaps anywhere, short phrases with breathing room between them, the second phrase answering the first and ending lower, plain words of one or two syllables, male vocalist in a comfortable middle register.”
MIDI Notes Or A Performed Line
This category splits cleanly and it is worth knowing which side you are on. One kind of melody generator produces MIDI: notes you can see, drag, quantise, transpose and hand to any instrument, often matched to a key, a scale and a chord progression you supply. That is the right tool if you are building inside a session and the melody is a component. This is the other kind. It performs the line and gives you audio, with no MIDI, no key or scale control, no tempo lock and no stems, which means you cannot take it apart afterwards. What it buys you is hearing rather than reading, and two things follow from that. The first is speed: generating several different contours against the same brief and listening for the one that sticks takes minutes. The second only applies to vocal melodies, and it is the genuine gap in the MIDI approach. A topline is a melody and its words at the same time, and syllables and notes constrain each other constantly, so a line of notes with nobody singing it cannot tell you whether the words fit. Here the lyrics are written, shown to you, editable, and then sung on the melody, which is the only way to find that out. Describing the line by shape rather than by note is not a workaround either: contour is what listeners encode most reliably.
- The MIDI split explained up front, since half this category exports notes
- Contour as the way in, backed by how melodic memory actually works
- Sung toplines where words and melody are tested together
- Stripping the arrangement back by ruling instruments out explicitly
- Honest gaps: no MIDI, no key, scale or tempo control, no stems, no length control
Melody Prompts Worth Copying
Each names a contour, a range and a performer, and says what to leave out.
Exposed guitar line
“Instrumental piece with a single clean electric guitar playing one melody and nothing else at all, no drums, bass, pads or harmony, the line arching upward across the first four bars to a high point then stepping back down, staying within one octave, phrases separated by a full bar of silence, repeated three times unchanged”
Repeated-note hook
“Write and sing a song whose chorus melody stays on one repeated note for the first two bars and lets the rhythm of the words carry it, then leaps up a wide interval on the final word and holds it on an open vowel, narrow range everywhere else, the same phrase repeated four times, female vocalist forward and close”
Singalong chorus
“Write and sing a chorus with a deliberately narrow range of about five notes, moving stepwise to adjacent notes with no wide leaps anywhere, short phrases with breathing room between them, the second phrase answering the first and ending lower, plain words of one or two syllables, male vocalist in a comfortable middle register”
Rising sequence
“Instrumental piece built on one short four-note figure repeated a step higher each time it comes round, seven times in total, played by a solo piano with a quiet sustained string note underneath and nothing else, no percussion, each repetition slightly louder, stopping at the top without resolving”
Descending theme
“Instrumental melody for solo cello starting high and descending gradually across the whole phrase to end at the bottom of its range, long sustained notes with slow vibrato, no accompaniment other than a single quiet drone, phrases separated by silence, unhurried and unresolved at the end”
Call and response
“Instrumental piece where a wooden flute plays a short rising phrase and a fiddle answers it with a falling phrase ending lower, alternating for the whole piece with a bar of silence between each exchange, no percussion and no chords underneath, both instruments staying within a narrow range”
Who Generates Melodies Here
Songwriters
Hear a topline with its words before committing to it.
Producers
Contour ideas to react to, played rather than notated.
Video editors
Exposed melodic lines that clear for commercial use.
Teachers
Worked examples of stepwise, leaping and arched shapes.
What You Get
A performed melody
Stereo MP3, sung or played, near three minutes.
The written lyrics
For toplines, editable before anything is sung.
Download on paid plans
Full commercial rights, no attribution, no expiry.
Free share link
Send an idea to a collaborator before spending a download.
Frequently Asked Questions
Starting with MIDI, because it decides whether this is the right tool at all.
Does it export MIDI?
No, and this is the first thing to check before you spend anything, because a lot of this category is built around it. Several tools on this search generate melodies as MIDI notes you then load into a digital audio workstation, edit, and assign to whatever instrument you like. Nothing here does that. What comes back is finished audio: a stereo MP3 of the melody already performed, either sung or played by an instrument. If your plan is to drag notes around in a piano roll, use one of the MIDI tools. If your plan is to hear whether an idea works, this is the faster route.
Can I set the key, scale or tempo?
You can name them in the prompt but you cannot set them, and there are no controls for any of the three. That is a real difference from tools which will match a melody to a chord progression you supply, in a key and at a tempo you choose. Naming a key is a request the model often honours and sometimes does not, so if the melody has to sit against something you have already recorded, check it against your own instrument before building on it. For generating ideas from nothing, which is what most people are doing here, it matters much less.
If I cannot specify notes, how do I describe a melody?
By its shape, and there is good reason to think that is the more useful description anyway. Research going back to Dowling in the 1970s found that listeners encode the contour of a melody, its pattern of rising and falling, more readily than the exact intervals between the notes, and that contour survives transposition when interval detail does not. In other words the shape is what people actually remember. Shape is also something you can put into words: rises through the phrase and falls at the end, leaps up at the start then steps down, stays on one note and moves rhythmically.
Can it give me a sung topline with actual words?
Yes, and it is the thing this does that the MIDI tools cannot. A topline is the vocal melody and the words together, and here both are written and performed in one pass: you give a brief, the lyrics come back as a sheet you can read and edit, and then the melody is sung. MIDI melody generators give you a line of notes with nobody singing it, which tells you the shape but not whether the words sit on it. Since syllables and melody constrain each other heavily, hearing them together is often the only way to know if a line works.
How do I get a melody that people can actually sing?
Ask for a narrow range and mostly stepwise movement. A melody that moves to adjacent notes and stays within about an octave is singable by almost anyone, which is why folk songs, anthems and chants are built that way. Wide leaps are more distinctive and more memorable but harder to sing, so they suit a hook that a listener admires rather than joins in with. If you want a crowd to sing it, say so directly: narrow range, stepwise, no big leaps, short phrases with breathing room between them.
Can I get just the melody, without a full arrangement?
You can get close by naming the instrumentation tightly, but there is no solo-instrument mode. Ask for one instrument playing the melody and explicitly rule out the rest: no drums, no bass, no pads, no harmony. Something like a single clean electric guitar playing the line with nothing else at all does work. What you cannot do is generate a full track and then extract the melody from it afterwards, because there are no stems and no WAV, so everything arrives mixed together. Deciding on the sparse version before generating is the way round it.
Is this useful for songwriters, or only for finished tracks?
It suits the stage where you are looking for an idea to react to rather than a finished piece. Generating half a dozen contours against the same brief and listening for the one that sticks is quick, and hearing a melody performed tells you things a piano roll does not, particularly about phrasing and where a singer would breathe. What it will not do is fit into a session: no MIDI, no key or tempo lock, no stems. Treat it as a sketchbook that plays back rather than as a component you drop into a project.
Is it free, and can I use the melody commercially?
15 credits on signup with no card, which covers one complete generation, plus free streaming and a public share link. Downloads and commercial use need a paid plan from $15 a month for 250 credits, with a full commercial licence, no attribution and no expiry. Credits refund automatically when a generation fails. Prompts run to 4,000 characters, so you can describe a contour, an instrument and what to leave out in real detail. Output is a stereo MP3 near three minutes long, with no length control.
More Song & Writing Tools
Same studio, same credits — from an idea to a finished piece.
Hear It, Do Not Read It.
A piano roll shows you the notes. It cannot tell you whether the words sit on them. 15 credits, no card.