Piezo piano

main.c

int    IMLength  = 70;
String IMNotes[] = {"G4","G4", "G4", "D#4/Eb4", "A#4/Bb4", "G4", "D#4/Eb4","A#4/Bb4", "G4", "D5", "D5", "D5", "D#5/Eb5", "A#4/Bb4", "F#4/Gb4", "D#4/Eb4","A#4/Bb4", "G4", "G5","G4","G4","G5","F#5/Gb5", "F5","E5","D#5/Eb5","E5", "rest", "G4", "rest","C#5/Db5","C5","B4","A#4/Bb4","A4","A#4/Bb4", "rest", "D#4/Eb4", "rest", "F#4/Gb4", "D#4/Eb4","A#4/Bb4", "G4" ,"D#4/Eb4","A#4/Bb4", "G4"}; 
int    IMBeats[] = {8, 8, 8, 6, 2, 8, 6, 2, 16, 8, 8, 8, 6, 2, 8, 6, 2, 16, 8, 6, 2, 8, 6, 2, 2, 2, 2, 6, 2, 2, 8, 6, 2, 2, 2, 2, 6, 2, 2, 9, 6, 2, 8, 6, 2, 16};
int    IMTempo   = 50;

int    RTLength  = 19;
String RTNotes[] = {"F4", "F4", "F4",  "A#4/Bb4", "F5", "D#5/Eb5", "D5", "C5", "A#5/Bb5", "F5", "D#5/Eb5", "D5",  "C5", "A#5/Bb5", "F5", "D#5/Eb5", "D5", "D#5/Eb5", "C5"};
int    RTBeats[] = {21, 21, 21, 128, 128, 21, 21, 21, 128, 64, 21, 21, 21, 128, 64, 21, 21, 21, 128}; 
int    RTTempo   = 50;

String noteNames[] = { "D#4/Eb4", "E4", "F4", "F#4/Gb4", "G4", "G#4/Ab4", "A4", "A#4/Bb4", "B4", "C5", "C#5/Db5", "D5", "D#5/Eb5", "E5", "F5", "F#5/Gb5", "G5", "G#5/Ab5", "A5", "A#5/Bb5", "B5", "C6", "C#6/Db6", "D6", "D#6/Eb6", "E6", "F6", "F#6/Gb6", "G6" };
int tones[] = { 1607, 1516, 1431, 1351, 1275, 1203, 1136, 1072, 1012, 955, 901, 851, 803, 758, 715, 675, 637, 601, 568, 536, 506, 477, 450, 425, 401, 379, 357, 337, 318 };

int blueLEDPin   = 0;
int redLEDPin    = 1;
int buttonCPin   = 2;
int buttonDPin   = 3;
int buttonEPin   = 4;
int buttonFPin   = 5;
int buttonGPin   = 6;
int buttonAPin   = 7;
int buttonBPin   = 8;
int buttonCupPin = 9;
int imperialPin  = 10;
int rebelPin.    = 11;
int speakerPin   = 12;

int buttonstates[10];

//NOTES         'c'  , 'd',  'e',  'f',  'g', 'a',  'b',  'C'
int buttonTones[] = {1915, 1700, 1519, 1432, 1275, 1136, 1014, 956};
int curTone = 0;

void playToneOnce(int tone) {
  digitalWrite(speakerPin, HIGH);
  delayMicroseconds(tone);
  digitalWrite(speakerPin, LOW);
  delayMicroseconds(tone);
}

void playTone(int tone, int duration) {
  for (long i = 0; i < duration * 1000L; i += tone * 2)
    playToneOnce(tone);
}

void playNote(String note, int duration) {
for (int i = 0; i < 29; i++)
    if (noteNames[i] == note)
      playTone(tones[i], duration);
}

void imperialMarch() {
  for (int i = 0; i < IMLength; i++) {
    if (IMNotes[i] == "rest") {
      delay(IMBeats[i] * IMTempo);
    }
    else {
      digitalWrite(redLEDPin, HIGH);
      playNote(IMNotes[i], IMBeats[i] * IMTempo);
    }
    digitalWrite(redLEDPin, LOW);
    delay(IMTempo / 2);
  }
}

void rebelTheme() {
  for (int i = 0; i < RTLength; i++) {
    if (RTNotes[i] == "rest") {
      delay(RTBeats[i] * RTTempo);
    }
    else {
      digitalWrite(blueLEDPin, HIGH);
      playNote(RTNotes[i], RTBeats[i] * RTTempo);
    }
    digitalWrite(blueLEDPin, LOW);
    delay(RTTempo / 2);
  }
}

void setup() {
  pinMode(buttonCPin,   INPUT);
  pinMode(buttonDPin,   INPUT);
  pinMode(buttonEPin,   INPUT);
  pinMode(buttonFPin,   INPUT);
  pinMode(buttonGPin,   INPUT);
  pinMode(buttonAPin,   INPUT);
  pinMode(buttonBPin,   INPUT);
  pinMode(buttonCupPin, INPUT);
  pinMode(imperialPin,  INPUT);
  pinMode(rebelPin,     INPUT);
  pinMode(speakerPin,   OUTPUT);
  pinMode(blueLEDPin,   OUTPUT);
  pinMode(redLEDPin,    OUTPUT);
}

void loop() {

  digitalWrite(blueLEDPin, LOW);
  digitalWrite(redLEDPin, LOW);
  digitalWrite(speakerPin, LOW);

  buttonstates[0] = digitalRead(buttonCPin);
  buttonstates[1] = digitalRead(buttonDPin);
  buttonstates[2] = digitalRead(buttonEPin);
  buttonstates[3] = digitalRead(buttonFPin);
  buttonstates[4] = digitalRead(buttonGPin);
  buttonstates[5] = digitalRead(buttonAPin);
  buttonstates[6] = digitalRead(buttonBPin);
  buttonstates[7] = digitalRead(buttonCupPin);
  buttonstates[8] = digitalRead(imperialPin);
  buttonstates[9] = digitalRead(rebelPin);

  for (i = 0; i<8; i++) {
    if (buttonstates[i] == HIGH) {
      playToneOnce(tones[i]);
      break;
    }
  }

  if (buttonstates[8] == HIGH) {
    imperialMarch();
  } else if (buttonstate[9] == HIGH) {
    rebelTheme();
  }

}