miRack MidiFX to generate chords send to midi output from single note midi input.
The two SEMIS modules transpose the input midi note to generate a three note chord on the midi output.
The LAZY SUSAN module applies the scale quantization to the three notes.
The three MIDI OUTPUTs send out the chord on channel 1.
The example transposes to a minor chord, that is then quantized to C Dorian scale resulting in different chords for all input notes (except C#) due to the quantization.