wrapper

oldWrap = peripheral.wrap
ints = {
  [0] = "note.harp",
  [1] = "note.bd",
  [2] = "note.snare",
  [3] = "note.hat",
  [4] = "note.bassattack"
}

peripheral.wrap = function(side)
  local p = oldWrap(side)
  p.oldNote = p.playNote
  p.playNote = function(int, note)
    int = ints[int]
    anote = math.pow(2, (note-12) /12)
    p.playSound(int, anote, 1)
  end
  return p
end