The Randomizer MIDI plug-in randomizes incoming MIDI events in real time. Instead of deterministic output, Randomizer injects controlled randomness — changing note values, controller data, velocities, or other MIDI parameters — to add human feel, variation, or creative unpredictability to your MIDI performances.

Key Features

• Event Type (pop-up menu): Choose which kind of MIDI event to randomize (e.g., Note Number, Velocity, Gate Time, Controller, etc.). 

• Input Range (Low / High sliders): Define the range of incoming values that will be affected by randomization; values outside the range pass through unaffected. Inverted ranges are supported (i.e., randomize notes outside the range instead of inside). 

• Amount slider: Controls the intensity of randomization — how far values can deviate from the original within the defined range. 

• Weight slider: Shapes the distribution of random values within the range — biasing randomization toward lower, higher, or evenly across the range. 

• Output Offset slider (where applicable): Applies a fixed offset after randomization (useful for pitch shifts, controller offsets, etc.). 

• Seed slider (extended parameter): Sets a starting point for randomization; using the same seed ensures repeatable random output, whereas “Random” gives different results each play-through.

Best Use Cases

• Humanizing MIDI performances: subtle randomization of velocity, gate time, or note timing to avoid mechanical tightness.

• Lo-fi or “organic” synth textures: randomized note values, controller modulations, or subtle pitch/velocity drift for character.

• Generative / evolving patterns: using randomization on controller values or note number for unpredictable, evolving sequences.

• Dynamic variation in repeated parts: adding variation to hi-hat patterns, arps, or backing chords to keep repeated sections interesting.

• Sound design / experimental music: aggressive randomness for glitch effects, unstable textures, or unexpected modulation behavior.

Popular Song Examples

• Bon Iver — “Holocene” (5:36)

• Use (0:12–0:28): Soft guitar and ambient textures exhibit subtle timing/velocity variation similar to randomized MIDI → creates organic, human feel.

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• Radiohead — “Everything in Its Right Place” (4:11)

• Use (0:00–0:25): Evolving synth pad and shifting textures — analogous to randomized controller or note-number modulation for motion.

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• James Blake — “Retrograde” (3:43)

• Use (1:16–1:35): Dynamic synth modulation and shifting rhythms—randomized CC values or gate-time tweaks could recreate similar atmosphere.

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• Aphex Twin — “Xtal” (4:51)

• Use (0:40–1:10): Loose, slightly off-grid percussion and ambient pads — mimicking human-feel variations that a Randomizer could produce.

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• Four Tet — “Two Thousand and Seventeen” (4:36)

• Use (0:00–0:35): Plucked-synth patterns with subtle velocity/timing variation resembling Randomizer “humanize” settings.

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• Portishead — “Roads” (5:01)

• Use (1:22–1:50): Filter and modulation movement with expressive inconsistency — similar to randomized controller modulation.

Workflow Tips

• Use low Amount + low Weight for subtle, natural variation (ideal for acoustic or human-feel MIDI).

• For electronic or glitch effects, increase Amount + adjust Weight bias to high or low extremes for more dramatic randomization.

• Use Input Range to protect important notes or registers (e.g., avoid randomizing bass notes while applying randomness to high hats).

• Use Seed mode for reproducible random patterns, especially when bouncing MIDI to audio; set Seed once and reuse it across sessions for consistency.

• Combine Randomizer with Arpeggiator or Chord Trigger to add controlled variation to arpeggiated or chord-based MIDI.

• Automate Randomizer parameters (Amount, Weight, Range) over time to create evolving textures rather than static patterns.