// This Code is Designed by Prince Kushwaha from COSM Electronics
// Connect a piezo buzzer or speaker to pin 11 or select a new pin.  

#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978
#define REST 0
// change tempo to make the song slower or faster
int tempo1 = 140;
int tempo2 = 180;
int tempo3 = 140;
// change this to whichever pin you want to use
int buzzer = 11;
// notes of the moledy followed by the duration.
// a 4 means a quarter note, 8 an eighteenth , 16 sixteenth, so on
// !!negative numbers are used to represent dotted notes,
// so -4 means a dotted quarter note, that is, a quarter plus an eighteenth!!
int melody1[] = {
  NOTE_C4,
  4,
  NOTE_C4,
  8,
  NOTE_D4,
  -4,
  NOTE_C4,
  -4,
  NOTE_F4,
  -4,
  NOTE_E4,
  -2,
  NOTE_C4,
  4,
  NOTE_C4,
  8,
  NOTE_D4,
  -4,
  NOTE_C4,
  -4,
  NOTE_G4,
  -4,
  NOTE_F4,
  -2,
  NOTE_C4,
  4,
  NOTE_C4,
  8,
  NOTE_C5,
  -4,
  NOTE_A4,
  -4,
  NOTE_F4,
  -4,
  NOTE_E4,
  -4,
  NOTE_D4,
  -4,
  NOTE_AS4,
  4,
  NOTE_AS4,
  8,
  NOTE_A4,
  -4,
  NOTE_F4,
  -4,
  NOTE_G4,
  -4,
  NOTE_F4,
  -2,
};
int melody2[] = {
  NOTE_E5,
  8,
  NOTE_D5,
  8,
  NOTE_FS4,
  4,
  NOTE_GS4,
  4,
  NOTE_CS5,
  8,
  NOTE_B4,
  8,
  NOTE_D4,
  4,
  NOTE_E4,
  4,
  NOTE_B4,
  8,
  NOTE_A4,
  8,
  NOTE_CS4,
  4,
  NOTE_E4,
  4,
  NOTE_A4,
  2,
};
int melody3[] = {
  NOTE_C5, 4,  //1
  NOTE_F5, 4, NOTE_F5, 8, NOTE_G5, 8, NOTE_F5, 8, NOTE_E5, 8,
  NOTE_D5, 4, NOTE_D5, 4, NOTE_D5, 4,
  NOTE_G5, 4, NOTE_G5, 8, NOTE_A5, 8, NOTE_G5, 8, NOTE_F5, 8,
  NOTE_E5, 4, NOTE_C5, 4, NOTE_C5, 4,
  NOTE_A5, 4, NOTE_A5, 8, NOTE_AS5, 8, NOTE_A5, 8, NOTE_G5, 8,
  NOTE_F5, 4, NOTE_D5, 4, NOTE_C5, 8, NOTE_C5, 8,
  NOTE_D5, 4, NOTE_G5, 4, NOTE_E5, 4,
  NOTE_F5, 2, NOTE_C5, 4,  //8
  NOTE_F5, 4, NOTE_F5, 8, NOTE_G5, 8, NOTE_F5, 8, NOTE_E5, 8,
  NOTE_D5, 4, NOTE_D5, 4, NOTE_D5, 4,
  NOTE_G5, 4, NOTE_G5, 8, NOTE_A5, 8, NOTE_G5, 8, NOTE_F5, 8,
  NOTE_E5, 4, NOTE_C5, 4, NOTE_C5, 4,
  NOTE_A5, 4, NOTE_A5, 8, NOTE_AS5, 8, NOTE_A5, 8, NOTE_G5, 8,
  NOTE_F5, 4, NOTE_D5, 4, NOTE_C5, 8, NOTE_C5, 8,
  NOTE_D5, 4, NOTE_G5, 4, NOTE_E5, 4,
  NOTE_F5, 2, NOTE_C5, 4,
  NOTE_F5, 4, NOTE_F5, 4, NOTE_F5, 4,  //17
  NOTE_E5, 2, NOTE_E5, 4,
  NOTE_F5, 4, NOTE_E5, 4, NOTE_D5, 4,
  NOTE_C5, 2, NOTE_A5, 4,
  NOTE_AS5, 4, NOTE_A5, 4, NOTE_G5, 4,
  NOTE_C6, 4, NOTE_C5, 4, NOTE_C5, 8, NOTE_C5, 8,
  NOTE_D5, 4, NOTE_G5, 4, NOTE_E5, 4,
  NOTE_F5, 2, NOTE_C5, 4,
  NOTE_F5, 4, NOTE_F5, 8, NOTE_G5, 8, NOTE_F5, 8, NOTE_E5, 8,
  NOTE_D5, 4, NOTE_D5, 4, NOTE_D5, 4,
  NOTE_G5, 4, NOTE_G5, 8, NOTE_A5, 8, NOTE_G5, 8, NOTE_F5, 8,  //27
  NOTE_E5, 4, NOTE_C5, 4, NOTE_C5, 4,
  NOTE_A5, 4, NOTE_A5, 8, NOTE_AS5, 8, NOTE_A5, 8, NOTE_G5, 8,
  NOTE_F5, 4, NOTE_D5, 4, NOTE_C5, 8, NOTE_C5, 8,
  NOTE_D5, 4, NOTE_G5, 4, NOTE_E5, 4,
  NOTE_F5, 2, NOTE_C5, 4,
  NOTE_F5, 4, NOTE_F5, 4, NOTE_F5, 4,
  NOTE_E5, 2, NOTE_E5, 4,
  NOTE_F5, 4, NOTE_E5, 4, NOTE_D5, 4,
  NOTE_C5, 2, NOTE_A5, 4,  //36
  NOTE_AS5, 4, NOTE_A5, 4, NOTE_G5, 4,
  NOTE_C6, 4, NOTE_C5, 4, NOTE_C5, 8, NOTE_C5, 8,
  NOTE_D5, 4, NOTE_G5, 4, NOTE_E5, 4,
  NOTE_F5, 2, NOTE_C5, 4,
  NOTE_F5, 4, NOTE_F5, 8, NOTE_G5, 8, NOTE_F5, 8, NOTE_E5, 8,
  NOTE_D5, 4, NOTE_D5, 4, NOTE_D5, 4,
  NOTE_G5, 4, NOTE_G5, 8, NOTE_A5, 8, NOTE_G5, 8, NOTE_F5, 8,
  NOTE_E5, 4, NOTE_C5, 4, NOTE_C5, 4,
  NOTE_A5, 4, NOTE_A5, 8, NOTE_AS5, 8, NOTE_A5, 8, NOTE_G5, 8,  //45
  NOTE_F5, 4, NOTE_D5, 4, NOTE_C5, 8, NOTE_C5, 8,
  NOTE_D5, 4, NOTE_G5, 4, NOTE_E5, 4,
  NOTE_F5, 2, NOTE_C5, 4,
  NOTE_F5, 4, NOTE_F5, 8, NOTE_G5, 8, NOTE_F5, 8, NOTE_E5, 8,
  NOTE_D5, 4, NOTE_D5, 4, NOTE_D5, 4,
  NOTE_G5, 4, NOTE_G5, 8, NOTE_A5, 8, NOTE_G5, 8, NOTE_F5, 8,
  NOTE_E5, 4, NOTE_C5, 4, NOTE_C5, 4,
  NOTE_A5, 4, NOTE_A5, 8, NOTE_AS5, 8, NOTE_A5, 8, NOTE_G5, 8,  //53
  NOTE_F5, 4, NOTE_D5, 4, NOTE_C5, 8, NOTE_C5, 8,
  NOTE_D5, 4, NOTE_G5, 4, NOTE_E5, 4,
  NOTE_F5, 2, REST, 4
};
// sizeof gives the number of bytes, each int value is composed of two bytes (16 bits)
// there are two values per note (pitch and duration), so for each note there are four bytes
int notes1 = sizeof(melody1) / sizeof(melody1[0]) / 2;
int notes2 = sizeof(melody2) / sizeof(melody2[0]) / 2;
int notes3 = sizeof(melody3) / sizeof(melody3[0]) / 2;
// this calculates the duration of a whole note in ms
int wholenote1 = (60000 * 4) / tempo1;
int wholenote2 = (60000 * 4) / tempo2;
int wholenote3 = (60000 * 4) / tempo3;
int divider = 0, noteDuration = 0;
void setup() {
  Serial.begin(9600);
  Serial.println("Welcome to the Arduino Music Player");
  Serial.println("Press a to play HAPPY BIRTHDAY TUNE");
  Serial.println("Press b to play NOKIA TUNE");
  Serial.println("Press c to play Merry CHRISTMAS TUNE");
}
void loop() {
  if (Serial.available() > 0) {
    int value = Serial.read();
    switch (value) {
      case 'a':
        Serial.println("PLAYING HAPPY BIRTHDAY TUNE");
        for (int thisNote = 0; thisNote < notes1 * 2; thisNote = thisNote + 2) {
          // calculates the duration of each note
          divider = melody1[thisNote + 1];
          if (divider > 0) {
            // regular note, just proceed
            noteDuration = (wholenote1) / divider;
          } else if (divider < 0) {
            // dotted notes are represented with negative durations!!
            noteDuration = (wholenote1) / abs(divider);
            noteDuration *= 1.5;  // increases the duration in half for dotted notes
          }
          // we only play the note for 90% of the duration, leaving 10% as a pause
          tone(buzzer, melody1[thisNote], noteDuration * 0.9);
          // Wait for the specief duration before playing the next note.
          delay(noteDuration);
          // stop the waveform generation before the next note.
          noTone(buzzer);
        }
        break;
      case 'b':
        Serial.println("PLAYING NOKIA TUNE");
        for (int thisNote = 0; thisNote < notes2 * 2; thisNote = thisNote + 2) {
          // calculates the duration of each note
          divider = melody2[thisNote + 1];
          if (divider > 0) {
            // regular note, just proceed
            noteDuration = (wholenote2) / divider;
          } else if (divider < 0) {
            // dotted notes are represented with negative durations!!
            noteDuration = (wholenote2) / abs(divider);
            noteDuration *= 1.5;  // increases the duration in half for dotted notes
          }
          // we only play the note for 90% of the duration, leaving 10% as a pause
          tone(buzzer, melody2[thisNote], noteDuration * 0.9);
          // Wait for the specief duration before playing the next note.
          delay(noteDuration);
          // stop the waveform generation before the next note.
          noTone(buzzer);
        }
        break;
      case 'c':
        Serial.println("PLAYING MERRY CHRISTMAS TUNE");
        // iterate over the notes of the melody.
        // Remember, the array is twice the number of notes (notes + durations)
        for (int thisNote = 0; thisNote < notes3 * 2; thisNote = thisNote + 2) {
          // calculates the duration of each note
          divider = melody3[thisNote + 1];
          if (divider > 0) {
            // regular note, just proceed
            noteDuration = (wholenote3) / divider;
          } else if (divider < 0) {
            // dotted notes are represented with negative durations!!
            noteDuration = (wholenote3) / abs(divider);
            noteDuration *= 1.5;  // increases the duration in half for dotted notes
          }
          // we only play the note for 90% of the duration, leaving 10% as a pause
          tone(buzzer, melody3[thisNote], noteDuration * 0.9);
          // Wait for the specief duration before playing the next note.
          delay(noteDuration);
          // stop the waveform generation before the next note.
          noTone(buzzer);
        }
        break;
    }
  }
}