VCV Rack 2 plugins

Probabilistic tools
for generative patches.

BCNmodular brings controlled randomness to your patches. The machine decides who plays, when and how, without ever losing the musical thread.

Maestro: live channel state6 ch
CH.1
CH.2
CH.3
CH.4
CH.5
CH.6

In modular synthesis, structure and randomness are usually enemies. BCNmodular makes them work together: modules that think in probabilities, not fixed steps. The result is patches that evolve on their own and never sound exactly the same way twice.

Module 01: Arranger

Maestro

Probabilistic Voice Router, Arranger, Mixer, Sequencer & Trigger Generator.

Maestro module panel in VCV Rack

Instead of building fully deterministic sequences, Maestro acts as an intelligent conductor. Connect your voices, set their relative probabilities, and let Maestro help choose who plays at each evaluation point.

  • 6 independent channels: gate, clock, audio or trigger
  • Trigger, Gate or Fade mode per channel
  • Weighted probability with CV crossfade
  • Density and randomness control, bar-based evaluation
  • Full polyphonic support
  • RGB status LEDs per channel
Read the full manual (PDF) →
Module 02: Structure

SomeStructure

Arrangement Structure Generator for Maestro.

SomeStructure module panel in VCV Rack

While Maestro handles probabilistic voice routing at the bar level, SomeStructure provides the higher-level musical form: it defines the sections a track moves through (intro, build, drop, outro) and how density and voice roles evolve across them.

  • 8 configurable sections, editable per patch
  • 11 built-in styles, Electronic and Organic
  • 3 user-editable Custom styles
  • 16-channel polyphonic BCNmodular Bus output
  • Blur control for loose, musical transitions
  • MIDI-mappable jump buttons
"SomeStructure provides the structure. Maestro provides the life."

Structure with a life of its own

SomeStructure's density and role weights flow directly into Maestro, which turns them into weighted probability, producing arrangements with real musical form but natural variation on every single bar.

SomeStructureDensity · CH.1–CH.6
MaestroProbabilistic routing
Your patchNever quite the same

Played, not just programmed

The modules are virtual, but the hands on them aren't. Map a MIDI controller to SomeStructure's jump buttons, or to Maestro's density and blur, and steer the arrangement in real time, on stage or in the studio.

Add it to your rack

Get Maestro and SomeStructure from the VCV Library, or build them from source.
Open VCV Rack 2 and place both modules in your patch.
Connect your voices, set your probabilities, and let Maestro help.