Royalty-Free Generative MIDI Tools
These free MIDI generators create royalty-free patterns and progressions you can use in commercial productions. Choose a tool, customise the musical settings and export an editable MIDI file for your DAW.
Covering genres including Jungle, Drum and Bass, House and Pop, each tool uses music theory rules, compositional techniques and genre-specific characteristics to generate chord progressions, melodies, basslines, arpeggios, drum patterns and polyrhythms — high-quality, usable ideas rather than random notes.
Choose Your Starting Point
Explore the MIDI Generators
Use one generator to create a specific musical part or combine several tools to develop a complete track idea.
Chord Progression Generator
Create structured chord progressions using key, scale, genre, mood, chord colour, harmonic movement and voicing controls.
Melody Generator
Create hooks, motifs and developed melodic phrases that follow your chords and selected musical style.
Bassline Generator
Build bass patterns with genre-based rhythm, harmonic movement, passing notes, velocity and articulation.
Drum and Percussion Generator
Create coordinated kick, snare, hi-hat and percussion patterns across styles including House, Jungle, Drum and Bass and Trap.
Polyrhythm Generator
Create, hear and visualise overlapping rhythmic patterns including 2:3, 3:4 and 5:4.
Polyrhythm Arp MIDI Generator
Create musical arpeggios from chord progressions using classic note patterns, octave movement, cross-rhythms, polyrhythms and evolving cycles. Audition the arp with your chords, shape the rhythmic movement and export the result as MIDI.
Connected Music Production Workflow
Build Your Track One Part at a Time
Start with harmony, develop the melodic parts, add rhythm and then arrange everything using your own instruments inside your DAW.
Step 1
Chords
Create the harmonic foundation with the chord progression generator.
Step 2
Melody, Bassline and Arp
Generate melodic, low-end and arpeggiated parts that follow your chord progression and style.
Step 3
Drums and Percussion
Add groove, energy, variation and section development.
Step 4
Your DAW
Import the MIDI, choose your sounds and arrange the finished track.
More Than Random Notes
Music Theory, Composition and Genre Characteristics
Each tool combines controlled variation with musical structure to generate ideas that remain useful and stylistically relevant.
Music Theory Rules
Notes, chords and harmonic movement remain connected to the selected key, scale and musical context.
Composition Strategies
Repetition, contrast, motif development, phrase structure, tension and resolution help shape each idea.
Genre Characteristics
Rhythm, density, syncopation and musical movement respond to the selected genre and style.
Why Use MIDI Generators?
Endless Ideas That Remain Editable
Create Variations
Generate fresh ideas and related variations without starting every production with an empty project.
Edit Every Detail
Change the notes, timing, velocity, length, octave and rhythm after importing the MIDI into your DAW.
Use Your Own Sounds
Play the MIDI through your preferred synths, samplers, drum instruments and plugins.
Create Something New
MIDI Generators
Choose your musical settings, create different ideas and shape the results interactively.
Choose a Generator →Start with Composed Material
MIDI Packs
Browse ready-made melodies, chord progressions, basslines and rhythms written by producers and musicians.
Browse MIDI Packs →Royalty-Free MIDI
Use the Generated Patterns in Commercial Productions
The MIDI created by these tools can be used in personal and commercial music productions. You can edit the patterns, change the sounds and build them into your own finished tracks.
Built for Producers
Created and Tested by Transmission Samples
These generators are created and tested by Transmission Samples, producers of sample packs, MIDI packs and free music-production tools for producers and musicians.