Chordoo generates chord progressions in your browser. Pick one of 18 genres, a key and major or minor, and you get a 4, 6 or 8 chord progression you can play back, tweak and export as a MIDI or WAV file. It is free and there is nothing to sign up for.
The generator does not pick random chords from the whole keyboard. Each genre has its own set of progression patterns (a ii-V-I for jazz, a minor i-VI-III-VII for hip-hop, a I-V-vi-IV for pop) and its own chord colors, so a House progression comes out with sevenths while a Rock one stays on plain triads.
Not sure where to begin? Open one of these and regenerate around it. Each link loads the chords into the generator above.
| Progression | Numerals | Chords | Sound | Open |
|---|---|---|---|---|
| Pop axis | I – V – vi – IV | C – G – Am – FC major | Bright and familiar. The loop behind a huge share of pop choruses. | Play & export |
| Minor loop | i – VI – III – VII | Am – F – C – GA minor | The same chords as the pop axis, started on the minor. Moody, works for rap and trap. | Play & export |
| Jazz cadence | ii7 – V7 – Imaj7 – vi7 | Dm7 – G7 – Cmaj7 – Am7C major | Smooth tension and release. A good base for lo-fi and deep house. | Play & export |
| Neo soul minor | i9 – iv9 – VImaj7 – v7 | Dm9 – Gm9 – Bbmaj7 – Am7D minor | Warm and a little melancholic. Voice it open and play it slow. | Play & export |
Each genre page explains what makes its progressions work and lists examples you can open in the generator.
Already have chords in mind? Type them into the chord to MIDI converter. Looking for a feeling rather than a genre? Browse chord progressions by mood.
Choose a genre, a key (or leave it on Random) and major or minor. Chordoo builds a progression from patterns used in that genre. Press the spacebar or the refresh button for a new one, and lock any chord you want to keep before you regenerate.
Click the MIDI export button. The file downloads straight away and you can drag it onto any instrument track. FL Studio, Ableton Live, Logic Pro, Cubase, Studio One, Reaper, Bitwig and GarageBand all read it. If you just want audio, use WAV export instead.
Yes. There is no paid plan, no account and no export limit. Progressions you save are stored in your own browser.
18 genres: Pop, EDM, House, Deep House, Progressive House, Disco, Hip-Hop/Rap, R&B/Soul, Jazz, K-Pop, Afrobeats, Latin, Rock, Country, Indie Pop, Classical, Drum and Bass and Hardstyle. Every genre works in all 12 keys, major or minor, with 4, 6 or 8 chords.
There is no separate lo-fi preset. Jazz or R&B/Soul gives you the seventh and ninth chords lo-fi relies on. For trap and drill, pick Hip-Hop/Rap in a minor key and keep the progression to four chords.
Yes. The voicing panel lets you switch between root position and first or second inversion, choose closed or open voicings and move the octave. The MIDI and WAV exports follow those settings.
Use the share button to copy a link. Anyone who opens it gets the same chords, key and genre loaded in the generator, ready to play or export.