MTF Music Player V4

--mtf reader v4
--this is a new version of my file reader for my file type MTF(Music Text Format)
--this program is made for Minecraft 1.16.5, CC Tweaked

local tArg = {..}
local Instrument = {"block.note_block.bass", "block.note_block.snare", "block.note_block.basedrum", "block.note_block.bell", "block.note_block.flute", "block.note_block.chime", "block.note_block.guitar", "block.note_block.xyloph", "block.note_block.bit", "block.note_block.pling", "block.note_block.harp"}
local Pitch = {2,4,6,8,10,2,2,2,2,2,2}
--Note layout (2 digits for Instrument, if it is less then ten then add a zero to the beginning)(Pitch 1-5(the actual pitch will be twice what you put))
--there cant be spaces between parts of a note and cant be spaces between notes.
local Repeat = false
local Volume = 5
local SelectedFile = tArg[1]

local Position = 1
local TrackState = "Playing"

local function SongMenu()
term.clear()
term.setCursorPos(1,1)
print("Music Player--V4--------")
print("Buttons = p = play/pause, e = exit, w/s = +/- Volume, r = repeat on/off")
print(TrackState.." "..SelectedFile)
print("Volume = "..Volume)
print("Repeat? = "..Repeat)
Player()
local e, p = os.pullEvent("key")
if key == keys.e then
  TrackState = "Stopped"
elseif key == keys.p then
  if TrackState == "Stopped" then
    TrackState = "Playing"
  elseif TrackState == "Playing" then
    TrackState = "Stopped"
  end
  Player()
elseif key == keys.w then
  Volume = Volume + 1
elseif key == keys.s then
  Volume = Volume - 1
elseif key == keys.r then
  if Repeat == true then
    Repeat = false
  elseif Repeat == false then
    Repeat = true
  end
end
if key ~= keys.e then
  SongMenu()
end
end

local function Player()
local speaker = peripheral.find("speaker")
local file = fs.open(SelectedFile,"r")
local Note = string.substring(file.readAll(),file.read(Position),file.read(Position+1))
local NotePitch = string.substring(file.readAll(),file.read(Position+2),file.read(Position+2))
while TrackState == "Playing" and Position < #file.readAll() do
  Note = string.substring(file.readAll(),file.read(Position),file.read(Position+1))
  NotePitch = string.substring(file.readAll(),file.read(Position+2),file.read(Position+2))
  speaker.playNote(Instrument[Note], Volume, Pitch[NotePitch])
  Position = Position + 3
  sleep(2)
end
file.close()
if Repeat == true and TrackState == "Playing" then
  Position = 1
  Player()
else
  shell.run(settings.get("MenuScriptName"))
end
end

Player()