const int T_C = 262;
const int T_D = 294;
const int T_E = 330;
const int T_F = 349;
const int T_G = 392;
const int T_A = 440;
const int T_B = 493;
#include <Servo.h>

Servo servo1;
const int Buzz = 11;
const int LED = 13;
#define potPin A0

const int C = 10;
const int D = 9;
const int E = 8;
const int F = 7;
const int G = 6;
const int A = 5;
const int B = 4;

unsigned long lastNoteTime = 0;
int currentNote = 0;

void setup()
{
  servo1.attach(3);
  pinMode(LED, OUTPUT);

  pinMode(C, INPUT);
  digitalWrite(C, HIGH);

  pinMode(D, INPUT);
  digitalWrite(D, HIGH);

  pinMode(E, INPUT);
  digitalWrite(E, HIGH);

  pinMode(F, INPUT);
  digitalWrite(F, HIGH);

  pinMode(G, INPUT);
  digitalWrite(G, HIGH);

  pinMode(A, INPUT);
  digitalWrite(A, HIGH);

  pinMode(B, INPUT);
  digitalWrite(B, HIGH);

  digitalWrite(LED, LOW);
}

void playNote(int note, int duration)
{
  tone(Buzz, note);
  digitalWrite(LED, HIGH);
  lastNoteTime = millis();
  currentNote = note;
}

void stopNote()
{
  noTone(Buzz);
  digitalWrite(LED, LOW);
}

void loop()
{
  int potValue = analogRead(potPin);
  int potValue1 = potValue / 5.7;

  if (potValue1 > -0.1 && potValue1 < 45)
    servo1.write(0);
  else if (potValue1 > 45 && potValue1 < 90)
    servo1.write(90);
  else if (potValue1 > 135)
    servo1.write(180);

  if (digitalRead(C) == LOW)
    playNote(T_C + potValue, 70);

  if (digitalRead(D) == LOW)
    playNote(T_D + potValue, 70);

  if (digitalRead(E) == LOW)
    playNote(T_E + potValue, 70);

  if (digitalRead(F) == LOW)
    playNote(T_F + potValue, 70);

  if (digitalRead(G) == LOW)
    playNote(T_G + potValue, 70);

  if (digitalRead(A) == LOW)
    playNote(T_A + potValue, 70);

  if (digitalRead(B) == LOW)
    playNote(T_B + potValue, 70);

  // Check if it's time to stop the note
  if (currentNote != 0 && millis() - lastNoteTime >= 70)
  {
    stopNote();
    currentNote = 0;
  }
}