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Thoughts on Generative Music – Part 16

(Excerpt from my e-book “A Systematic Introduction To Making Generative Music With Modular Synths”, Volume 1. Read more here: https://www.dev.rofilm-media.net/node/331)

Instruo “harmonàig” - Part 2

(modules, that are especially useful for making generative music)

generative music music of the krell krell patch

There is a transpose slider with an activate/deactivate button just below the CV in jack. This slider is inactive by default, but can be switched to different modes by tapping the button on the left below the slider. The modes are “quantised” (octave jumps), “global quantised” (jumps from note to note) and “fine tune”. 

But which CVs do we get at the four outputs? Or an even better question: To which pitches do the CVs at the 4 outputs correspond?

Well, at the leftmost output we get the root note (= the pitch which is - in form of CV - patched in the CV in jack).

Next to the root note output we get the third (musical interval) of the root note. That´s the reason, why this output is labelled “3”.

Further to the right we get the fifth of the root note, and at the rightmost output there we get the 7th of the root note.

Each of these 4 outputs is equipped with a SLEW potentiometer, so that we can make them glide between different notes (coming in at the CV in jack) or jump between them individually for each of the 4 outputs.

There is a GATE output below the CV outputs, but – most unfortunately – it puts out only triggers in QUANTISER mode (in PERFORMANCE mode it puts out real gate signals). It´s usefulness to activate envelope generators is quite limited therefore.

The chord quality now (those of you, who may not be called the “Einsteins of music theory” may not worry: just try out what´s written in the following paragraphs – and you will grasp the musical meaning quite fast, 

even without knowing all the mentioned terms – or find yourself a second job to be able to book my workshop ). There are 8 different chord qualities available by default, and additionally 4 user programmable ones (only in the hardware version so far – the VCV Rack version does not support this function, but it is said, that it will in the future). The following graphic shows what we can get in the Ionian scale. (and equivalently in the other adjustable scales.

We can switch between these chords after pushing the DIATONIC button to activate this function. We can switch manually or we can modulate the chord quality via external CV.

Let me take the chord C4-E4-G4-B4 to show the meaning of INVERSION and VOICING even to those of you, who were at the dentist´s, when these terms were explained at school.

Root close C4-E4-G4-B4

Root drop 2 C4-E5-G4-B4

Root drop 3 C4-E5-G5-B4

Root open C4-E5-G4-B5


1st inversion close C5-E4-G4-B4

1st inversion drop 2 C5-E4-G5-B4

1st inversion drop 3 C5-E4-G5-B5

1st inversion open C6-E4-G5-B4


2nd inversion close C5-E5-G4-B4

2nd inversion drop 2 C5-E5-G4-B5

2nd inversion drop 3 C6-E5-G4-B5

2nd inversion open C5-E6-G4-B5


3rd inversion close C5-E5-G5-B4

3rd inversion drop 2 C6-E5-G5-B4

3rd inversion drop 3 C6-E6-G5-B4

3rd inversion open C6-E5-G6-B4

Both, INVERSION as well as VOICING can be adjusted manually or modulated by external CV:


We can operate the module in different modal scales. In the software version we simply open the right-click menu. In the hardware version we have to proceed as follows:

first: press and hold the TRANSPOSE button.

second: press the DIATONIC button to switch

between the families “Ionian” and

“Harmonic Minor”

third: tap the following keys on the keyboard

of the module to choose a certain scale

fourth: press the TRANSPOSE button again to


And here are the scales and corresponding buttons:


Ionian Modes: Harmonic Minor Modes:


C – Ionian C – Aeolian #7

D – Dorian D – Locrian #6

E – Phrygian D# - Ionian #5

F – Lydian F – Dorian #4

G – Mixolydian G – Phrygian #3

A – Aeolian G# - Lydian #2

B – Locrian B – Super Locrian

The presets “harmonaig_1.vcv”. “harmonaig_2.vcv”, “harmonaig_3.vcv” and the video behind the following link lead you deep into the world of “harmonaig” (presets and video are only available in the book)

… to be continued.

GM_1 https://www.dev.rofilm-media.net/node/335

GM_2 https://www.dev.rofilm-media.net/node/343

GM_3 https://www.dev.rofilm-media.net/node/344

GM_4 https://www.dev.rofilm-media.net/node/358

GM_5 https://www.dev.rofilm-media.net/node/365

GM_6 https://www.dev.rofilm-media.net/node/374

GM_7 https://www.dev.rofilm-media.net/node/381

GM_8 https://www.dev.rofilm-media.net/node/386

GM_9 https://www.dev.rofilm-media.net/node/391

GM_10 https://www.dev.rofilm-media.net/node/404

GM_11 https://www.dev.rofilm-media.net/node/408

GM_12 https://www.dev.rofilm-media.net/node/415

GM_13 https://www.dev.rofilm-media.net/node/425

GN_14 https://www.dev.rofilm-media.net/node/427

G_15 https://www.dev.rofilm-media.net/node/549

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