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MIDIdock

Free MIDI Generator: Melodies, Chords & Bass in Seconds

Free MIDI Generator: Melodies, Chords & Bass in Seconds
Generation and downloads are temporarily unavailable until online usage authorization is connected.

Start with an idea

Prompt and settings run through a small, deterministic local rule set.

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Pricing: Your first generation is free — no sign-up, no credit card. Pro is $9.99/month with a monthly pool of generations, longer multi-track passes, and a full commercial license. Cancel anytime.

Describe the vibe or dial in the parameters — this MIDI generator turns a sentence, a key and a tempo into ready-to-use MIDI: melody, chords, bass, drums. Preview in your browser, then download a standard .mid for any DAW.

Your first generation is free — no sign-up, no credit card.

No install · No sign-up to try · Free to try

Describe your idea, hear the result in seconds, and only download what you love. What you generate stays yours.

How to Use

How to Create Music with Our MIDI Generator in 3 Easy Steps?

Three steps stand between you and a usable MIDI idea — no theory degree required.

  1. Step 1: Pick a generator mode

    Start with an AI prompt when you have a vibe but no notes ("moody lo-fi keys, 80 BPM"). Or use pattern mode for transparent dice-style control, or the melody and chord builders when you know your key.

  2. Step 2: Set the musical basics

    Choose a key, scale, tempo and length, then an instrument family — piano, synth, strings, drums. Four settings do most of the musical heavy lifting.

  3. Step 3: Generate, preview and download

    Hit Generate and hear the result in the built-in player. Don't love the take? Regenerate. When it clicks, download the .mid or send it to our online editor for polishing.

    Idea to downloadable MIDI takes under a minute — which is why producers keep a generator open next to their DAW.

Output previewIllustrative piano roll

Illustration only; it is not a conversion result or an accuracy claim.

Features

One MIDI Generator, Four Ways to Start

Most MIDI generators make you choose: AI black box or manual programming. This one gives you both, plus melody and chord builders — the tool fits the moment.

AI prompt mode — describe it, hear it

Type a mood, genre or reference ("dark synth-pop bass, 118 BPM") and get a musical starting point in seconds — perfect when you know the feeling but not the notes.

Pattern mode — you load the dice

Prefer transparency over mystery? Pattern mode rolls melodies, chords, basslines and drum patterns from parameters you set — key, scale, density, rhythm. Every note traces to a choice you made.

Melody & chord builders — key-aware by design

Build progressions and lead lines that never leave your chosen key and scale — a fast way to learn good voicings, and a reliable way to stay in key when writing fast.

Standard .mid export for every DAW

Chords, melody and bass land on separate tracks with tempo embedded, in a .mid file that opens in Ableton Live, FL Studio, Logic Pro, Cubase, Reaper and GarageBand.

Showcase: hear what a generation sounds like

Four real generations, four genres — press play to hear exactly what this MIDI generator produces.

Classical piano étude

C minor · 72 BPM · Piano

Rolling left-hand arpeggios under a singable right-hand line — eight bars with a natural dynamic arc.

Synth-pop hook

A major · 118 BPM · Synth lead + pads

Punchy bass, bright stacked chords and a lead hook built for a chorus — an eight-bar loop that starts sessions.

Lo-fi hip-hop loop

F major · 80 BPM · Rhodes + soft drums

Dusty seventh chords, lazy swing, mellow drum pattern. Chop it, loop it, build a beat tape around it.

Editable MIDI data and rendered audio
FormatWhat it containsWhat you can change
MIDINote events and musical control data, rather than recorded sound.Edit note pitch, timing, duration, velocity, and instrument in a MIDI editor.
Rendered audioA waveform of sound; note events are not directly exposed by the audio file.Edit the audio waveform. Note-level editing requires source MIDI or a transcription that estimates notes from the audio.

Use Cases

Who Reaches for a MIDI Generator?

Five people, one shared enemy: the empty project file.

Songwriters

When the hook won't come, generate ten progressions in the right key and react. Most writers find the keeper in three takes, then make it theirs.

Bedroom producers

No theory? Set a key and BPM, roll a bassline and drum pattern — a beat skeleton that stays in key while you learn by ear.

Music students

Hear a ii–V–I versus a i–VI–III–VII in seconds, not in a textbook. Progressions in every key are the fastest ear training there is.

Content creators

Need background music for a video or stream? Generate a loop, tweak the tempo, export — personal use is covered by the free tier.

Teachers

Demonstrate scales, modes and rhythms live in class — one prompt, any key, any tempo.

Limitations

What a MIDI Generator Can't Do — An Honest Note

Straight talk: a MIDI generator hands you starting points, not finished songs. Dense, full-song arrangements may need cleanup in your DAW, and AI takes can sound generic — taste is still yours, which is why every note stays editable. When you outgrow quick ideas and want a real AI co-writer — one that reads your MIDI, extends themes, learns your style — that's what our AI MIDI generator is for. This page is the sketchbook; that page is the studio. Neither limit is a flaw — it's the honest line between a free sketch tool and a paid co-writer.

FAQ

Frequently Asked Questions

What is a MIDI generator?

A MIDI generator creates MIDI note data — melodies, chords, basslines, drum patterns — from a text prompt or parameters. The output is editable note data, not audio: open it in any DAW and change it note by note.

How does a MIDI generator actually work?

Three modes. AI prompt mode turns a description into a musical idea; pattern mode rolls melodies, chords and rhythms from your parameters; melody and chord builders give you key-aware progressions to shape. Every mode exports standard .mid files.

What can it generate — melody, chords, bass, drums?

All four. Generate a melody, chord progression, bassline or drum pattern — or stack them into a multi-track .mid with parts separated. Set key, scale, BPM and length first so everything shares one musical space.

I have no music theory. Can I still use it?

Yes — that's the point. Pick a key and a mood; every note stays in key. Many users start here when stuck staring at an empty MIDI clip: one click gives you something to react to, edit and make yours.

AI generator or parameter-based generator — which should I pick?

AI prompt mode for a vibe with no starting point; parameter mode for control — key, scale, density, rhythm — with full transparency over each note. Both export identical .mid files, so mix and match.

Can I edit the MIDI after generating?

Yes. Every generation is standard MIDI — quantize, transpose or rewrite notes in any DAW, or open it in our free online MIDI editor. Nothing is locked or watermarked.

Which DAWs and software can open the generated MIDI?

Anything reading standard .mid: Ableton Live, FL Studio, Logic Pro, Cubase, Reaper, GarageBand, plus notation apps like MuseScore. Tempo is embedded; parts sit on separate tracks.

Is the generated music royalty-free? Can I use it commercially?

Generations are original note data, not copies of songs. Personal projects are fine on the free tier. To release or sell music, you'll need the commercial license in a paid plan.

Could generated MIDI create copyright problems?

Output is newly generated note data, not sampled audio, so sampling risks don't apply. Models learn patterns from large music collections; for commercial release, the paid plan's license is the safe route.

Is this MIDI generator free? How do credits work?

Your first generation is free — no sign-up, no credit card. Pro is $9.99/month with a monthly pool of generations, longer multi-track passes, and a full commercial license. Cancel anytime.

Do I need to sign up or install anything? Is my work private?

No install, no sign-up for your first generation. You work in the browser — nothing is uploaded, and prompts and outputs aren't used to train models. Your account stores only history and credit balance.

How is this different from your AI MIDI generator?

This page is the all-round toolbox: AI prompts plus transparent pattern, melody and chord generators, free to try. Our AI MIDI generator goes deeper — upload your MIDI, extend ideas, co-write with style-aware AI.

Related Tools

One page rarely finishes a track — these pick up where the generator leaves off.

AI MIDI Generator

Upload your MIDI, extend ideas, co-write with style-aware AI — when quick ideas aren't enough.

Online MIDI Editor

Quantize, transpose and rewrite notes in your browser before the track reaches your DAW.

MP3 to MIDI Converter

Turn piano recordings or hummed melodies into editable MIDI note data — the reverse of generating.

Online MIDI Player

Audition any .mid instantly with switchable instrument sounds — no DAW required.

MIDI to Sheet Music

Turn generated MIDI into printable notation for players, students or clients.

Final CTA

Start Generating Your First MIDI Track

Your next idea is one prompt away. Try the MIDI generator free — no sign-up for your first generation. Pro is $9.99/month with a monthly pool of generations, longer multi-track passes, and a full commercial license. Cancel anytime.

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