Chord player

ROLL

Play one key. Get a chord that fits, and the next one lit up.

ROLL turns every key into a chord that fits your song. Play one and it lights up good next moves, learned from 900+ real songs, so a progression comes together while you play. Out of ideas? Dice rolls a whole new one in one click: a new key, new chords and a new rhythm. Play ROLL a track from your DAW and Pairing reads its key and chords and suggests progressions that pair with it. Turn FLAVOUR from plain triads to lush ninths, pick from 65 rhythm patterns, and drag everything you played into your DAW as MIDI.

Coming soon

$79 / €79list price, one-time, when it launches

In development and not for sale yet, so there is nothing to buy, try or download today. The name, the look and the details below can still change before release.

See what’s out now

14-day trial
Free 1.x updates, 1.1 included
Pay once, no subscription

the ROLL main panel with the preset sidebar, the chord display, the FLAVOUR dial, sixteen chord tiles, the keyboard and What next? suggestions

Along the dial

Flavour sets how rich every chord is.

0–39PlainTwo-note chords and triads. Clean and open.

40–64ButteredSevenths. Where ROLL starts.

65–100RichNinths and elevenths, for lush keys and pads.

From the plugin

A first look.

the ROLL main panel playing Abadd9, with the voice-leading trail, What next? suggestions and the take strip of the chords played — **Play a key, hear a whole chord. The trail shows how the voices move, and the take strip keeps what you play.**

the ROLL rhythm screen with the Roll Rhythms list, the Dusty push pattern's hits over four chords and a Record button — **Pick a rhythm and the chord you hold plays in time, or record your own.**

the ROLL preset library with search, mood tags, genres and the My song is in key list — **A library of progressions you can search, hear and play in your song's key.**

the ROLL note editor with one chord's notes on a piano roll and voicing tools — **Edit any chord note by note. It renames itself as you go.**

the ROLL drop screen with the chords read from a loop, how sure ROLL is of each, and Extras that fit — **Drop a loop and ROLL reads its chords, on your computer.**

the ROLL settings screen with playing, pedal, bass, MIDI range and trigger options and the look — **Set how the keys play. The look is the Brand colours with the Fresh finish; more palettes and finishes come in a later update.**

the ROLL Pairing screen with the chords heard in a track and a ranked list of chord ideas that pair with it — **Play ROLL a track from your DAW and it suggests chords that pair with it.**

Planned

What next? lights up good next chords after every chord you play, from safe to bold, learned from 900+ real songs
Dice: one click rolls a whole new idea, with a new key, new chords and a new rhythm, and one undo takes it back
Pairing: play ROLL a track from your DAW, or drop a file, and it reads the key and chords and suggests progressions that pair with it
96 hand-written progressions in nine genres, with search, mood tags and My song is in to play every one in your song's key
65 rhythm patterns play the chord you hold in time with your DAW, from deep house and trap to reggaeton, Latin and gospel, or record your own rhythm by tapping or playing it
One FLAVOUR dial takes every chord from plain triads to sevenths, ninths and elevenths
Your progression on one row of keys, extra chords that fit the key on the next
Seven scales, from major and minor to Dorian, Lydian and harmonic minor, with smooth voice leading, Strum and Feel
Drop a loop and ROLL reads its chords, on your computer with nothing uploaded
Everything you play is recorded, ready to drag into your DAW as MIDI
Built-in Pad, Keys and Piano sounds, or MIDI only to play your own synth

Chord data: What next? uses chord-transition counts derived from the Rock Corpus by Trevor de Clercq and David Temperley (CC BY 4.0) and the McGill Billboard Project (CC0; Burgoyne, Wild and Fujinaga, ISMIR 2011).

Planned specs

Type: MIDI chord player with built-in sounds
Formats: VST3, AU and Standalone, plus an AU MIDI FX for Logic. No AAX.
macOS: 11 or later, Apple silicon and Intel
Windows: 10 or later, 64-bit
Sample rate: Up to 192 kHz, for the built-in sounds
Library: 96 or more hand-written progressions
Licence: 3 computers, no dongle
Trial: 14 days, every feature
Updates: Free for every 1.x version, 1.1 included

ROLL

Flavour sets how rich every chord is.

A first look.

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