KORG prologue MIDI CCs & NRPNs

MIDI implementation details for the KORG prologue.

Last update: November 27, 2025 • 56 parameters

Contributions welcome! You can email us your edited CSV if you don't want to use GitHub.

System

Parameter CC Range Usage Description Orientation
Bank Select MSB 0 [0–127]
0~127: Bank MSB
MIDI bank select (MSB)
0-based
Bank Select LSB 32 [0–127]
0~127: Bank LSB
MIDI bank select (LSB)
0-based

Timbre

Parameter CC Range Usage Description Orientation
Edit Timbre 85 [0–127]
0-42: Main; 43-85: Main+Sub; 86-127: Sub
Edit target (Main, Main+Sub, Sub)
0-based
Timbre Type 86 [0–127]
0-42: Layer; 43-85: Xfade; 86-127: Split
Layering mode (Layer/Xfade/Split)
0-based
Main/Sub Balance 8 [0–127]
0: Main; 64: Center; 127: Sub
Balance between Main and Sub timbre
Note: 64 approximately equal volumes
Centered

Master

Parameter CC Range Usage Description Orientation
Portamento Time 5 [0–127]
0~127: Time
Portamento duration
0-based
Voice Spread 14 [0–127]
0~127: Amount
Stereo voice spread amount
0-based
Voice Mode Depth 27 [0–127]
0~127: Depth
Depth function depends on Voice Mode
0-based

VCO 1

Parameter CC Range Usage Description Orientation
Wave 50 [0–127]
0-42: Square; 43-85: Triangle; 86-127: Saw
Waveform select
0-based
Octave 48 [0–127]
0-31: 16'; 32-63: 8'; 64-95: 4'; 96-127: 2'
Foot setting
0-based
Pitch 34 [0–127]
0~127: Pitch
Fine tune (cents)
0-based
Shape 36 [0–127]
0~127: Shape
Waveshape amount
0-based

VCO 2

Parameter CC Range Usage Description Orientation
Wave 51 [0–127]
0-42: Square; 43-85: Triangle; 86-127: Saw
Waveform select
0-based
Octave 49 [0–127]
0-31: 16'; 32-63: 8'; 64-95: 4'; 96-127: 2'
Foot setting
0-based
Pitch 35 [0–127]
0~127: Pitch
Fine tune (cents)
0-based
Shape 37 [0–127]
0~127: Shape
Waveshape amount
0-based

Multi Engine

Parameter CC Range Usage Description Orientation
Type 53 [0–127]
0~127: Type select
Engine/type select (Noise/VPM/User & subtype)
Note: Selection depends on engine
0-based
Octave 52 [0–127]
0-31: 16'; 32-63: 8'; 64-95: 4'; 96-127: 2'
Octave for Multi engine
0-based
Shape 54 [0–127]
0~127: Shape
Shape / engine parameter
0-based

Mixer

Parameter CC Range Usage Description Orientation
VCO 1 Level 39 [0–127]
0~127: Level
Oscillator 1 level
0-based
VCO 2 Level 40 [0–127]
0~127: Level
Oscillator 2 level
0-based
Multi Engine Level 33 [0–127]
0~127: Level
Multi engine level
0-based

Filter

Parameter CC Range Usage Description Orientation
Cutoff 43 [0–127]
0~127: Cutoff
VCF cutoff frequency
0-based
Resonance 44 [0–127]
0~127: Resonance
VCF resonance (Q)
0-based
EG Int 45 [0–127]
0: -100%; 64: 0%; 127: +100%
Filter EG intensity
Note: Maps to -100%..+100%
Centered
Drive 84 [0–127]
0-42: 0%; 43-85: 50%; 86-127: 100%
Drive amount (3-position)
0-based
Low Cut 82 [0–127]
0-63: Off; 64-127: On
High-pass (low-cut) on/off
0-based
Keytrack 83 [0–127]
0-42: 0%; 43-85: 50%; 86-127: 100%
Cutoff key tracking
0-based

Amp EG

Parameter CC Range Usage Description Orientation
Attack 16 [0–127]
0~127: Attack
Amp envelope attack
0-based
Decay 17 [0–127]
0~127: Decay
Amp envelope decay
0-based
Sustain 18 [0–127]
0~127: Sustain
Amp envelope sustain
0-based
Release 19 [0–127]
0~127: Release
Amp envelope release
0-based

EG

Parameter CC Range Usage Description Orientation
Attack 20 [0–127]
0~127: Attack
EG attack
0-based
Decay 21 [0–127]
0~127: Decay
EG decay
0-based
Sustain 22 [0–127]
0~127: Sustain
EG sustain
0-based
Release 23 [0–127]
0~127: Release
EG release
0-based

LFO

Parameter CC Range Usage Description Orientation
Wave 57 [0–127]
0-42: Triangle; 43-85: Saw; 86-127: Square
LFO waveform
0-based
Mode 58 [0–127]
0-42: BPM; 43-85: SLOW; 86-127: FAST
LFO range/mode
0-based
Rate 24 [0–127]
0~127: Rate
LFO speed
0-based
Intensity 26 [0–127]
0~127: Depth
LFO modulation depth
0-based
Target 56 [0–127]
0-42: Cutoff; 43-85: Shape; 86-127: Pitch
LFO destination
0-based

Modulation

Parameter CC Range Usage Description Orientation
Pitch EG Target 81 [0–127]
0-42: VCO2; 43-85: VCO1+2; 86-127: ALL
Applies EG to pitch (VCO2 / VCO1+2 / ALL)
0-based
Pitch EG Int 42 [0–127]
0: -100%; 64: 0%; 127: +100%
Pitch EG intensity
Note: Maps to negative/positive range
Centered
Ring/Sync 80 [0–127]
0-42: Ring; 43-85: Off; 86-127: Sync
Oscillator Ring Mod / Off / Sync
0-based
Cross Mod Depth 41 [0–127]
0~127: Depth
Cross modulation depth
0-based

Effects - Mod

Parameter CC Range Usage Description Orientation
Type 88 [0–127]
0-25: Chorus; 26-51: Ensemble; 52-77: Phaser; 78-102: Flanger; 103-127: User
Mod FX type/subtype select
Note: Chorus/Ensemble/Phaser/Flanger/User
0-based
Speed 28 [0–127]
0~127: Speed
Mod FX speed
0-based
Depth 29 [0–127]
0~127: Depth
Mod FX depth
0-based
On/Off 92 [0–127]
0-63: Off; 64-127: On
Enable/disable Mod FX
0-based

Effects - Delay/Reverb

Parameter CC Range Usage Description Orientation
Type 89 [0–127]
0~127: Type select
Delay/Reverb type/subtype select
Note: Type depends on Delay/Rev select
0-based
Time 30 [0–127]
0~127: Time
Delay time / Reverb time
0-based
Depth 31 [0–127]
0~127: Depth
Delay/Reverb depth (mix)
0-based
On/Off 94 [0–127]
0-63: Off; 64-127: On
Enable/disable Delay/Reverb
0-based

Pedal

Parameter CC Range Usage Description Orientation
Damper 64 [0–127]
0-63: Off; 64-127: On
Sustain pedal
0-based

Utilities

Parameter CC Range Usage Description Orientation
All Sound Off 120 [0–127]
0-127: Trigger
All Sound Off
0-based
Reset All Controllers 121 [0–127]
0-127: Reset
Reset all controllers.
0-based

This dataset is provided under the Creative Commons Attribution Share Alike 4.0 International license.