I am trying to create a matrix controlled step sequence additive/subtractive synth. I want the notes to range over 5 octaves (C0 - C5) but dont want all the notes to be displayed at once. I want just 5 rows displayed at a time then a switch to go up or down octaves but just have those 5 corresponding rows showing. Is there a way to shift the rows which are being displayed? I intend to map the row value to a midi note value so it plays the corresponding frequency into the synth.