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STEPSTRUM

ExpressiveStrummedChords

StepStrum turns held chords into realistic, tempo-synced strummed MIDI parts for your instruments.

Download StepStrum LiteSee how it works

StepStrum 1.1 adds chord-relative single-note steps. Pro adds MIDI pattern keyswitching for $39 USD.

StepStrum Pro interface screenshot with advanced sequencing controls.
StepStrum Pro interface.

From a held chord to a performed rhythm.

Play simple chords. StepStrum turns them into expressive strummed parts with timing, motion, and feel.

  1. MIDI keyboard holding a chord for StepStrum input.

    01Play a chord

    Hold any MIDI chord — acoustic, electric, or anything in between.

  2. StepStrum Pro global performance controls and feel settings.

    02Shape the strum

    Dial in spread, timing, swing, gate, and human variation.

  3. StepStrum Pro step sequencer rhythm pattern.

    03Build the rhythm

    Combine strums and selected chord notes in a clear step-based workflow.

  4. Piano roll showing a performed strummed rhythm from StepStrum.

    04Hear the performance

    StepStrum turns the chord into a musical strummed part.

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What makes it fast to use

Real-time chord detection, a visible 16-step grid, and all feel controls in one place.

Chord detection is direct

Hold any voicing and StepStrum reads the notes in real time. No chord maps, no MIDI programming, no per-instrument setup.

The rhythm is visible

Sixteen steps show activation, strum motion, and performance lanes in one view. Edit what you hear without hunting through menus.

Feel controls stay on the surface

Timing, swing, humanize, and gate are visible at all times. Shape the groove without switching panels or modes.