startup

n = peripheral.wrap("back")
m = peripheral.wrap("right")
x, y = m.getSize()
m.clear()
m.setBackgroundColor(colors.black)
for bg1 = 1,x,1 do
  for bg2 = 1,y,1 do
    m.setCursorPos(bg1,bg2)
    m.write(" ")
  end
end
for count=2,25,1 do
  m.setCursorPos(1,count)
  m.setBackgroundColor(colors.white)
  m.setTextColor(colors.black)
  if count/2 == math.floor(count/2) then
    m.setTextColor(colors.white)
    m.setBackgroundColor(colors.lightGray)
  end
  --if count == 2 or count == 4 then
  m.write("   ")
end
while true do
  event, side, xPos, yPos = os.pullEvent("monitor_touch")
  if xPos < 4 and yPos <= 25 and yPos > 1 and side == "right" then
    n.setPitch(yPos-1)
    n.triggerNote()
  end
end