chord switch by noizplay is a Virtual Effect Audio Plugin for macOS. It functions as an Audio Units Plugin and a VST3 Plugin.
This MIDI plugin generates chord sequences from simple note combinations. The plugin produces MIDI notes, NOT sounds. This means an instrument plugin is required after this plugin to play the MIDI notes.
Example: A single MIDI note “C” produces a C major chord. If an additional note “B” is added a half-tone below, a C minor chord is generated.
Advantage: If you need a specific type of chord, you don’t have to know the exact notes that make up that chord. Just input the root note and use the additional “half-tone” notes below to specify the chord type.