OK, so we could choose just These and use a single note but it surely’s probable we’ll want some kind of sequence. What you use for this doesn’t subject Substantially. Marbles or Pam’s Workout would do The work, as would anymore common sequencer but we’ll use Cycle Instrument’s Tetrachords. However https://www.youtube.com/watch?v=0CdmkfRRUJQ&t=1s