MIDI Mutator is a collection of tools to modify any aspect of a MIDI sequence: rhythm, timing, accents, chords&voicings, and shape.

Drop a MIDI pattern on MIDI Mutator to start transforming it into a new original pattern! Fully replace or slightly modify the rhythm with a single click. Experiment with other chord voicings, or replace the chords. Bass lines, chord patterns work equally well. The new MIDI sequence can be dragged directly to your DAW, or stored with a single click.

Features

regenerate the rhythm using 6 rhythm generator algorithms from RapidComposer, plus a new one that preserves exact note and rest lengths, suitable for modern genres

use rhythm from another MIDI file

slice a pattern, then rearrange slices randomly

displace notes randomly, randomize note positions and/or lengths

extend, widen, randomize chord voicings, replace the chord progression

change the beat positions to change the feel

replace or randomize accents

increase/decrease polyphony

randomize pitches

for monophonic phrases: change the contour, add connecting notes.

simple activation. No internet connection is required for activation or operation

home page: