const int B4 = 2;
const int G4 = 3;
const int F4 = 4;
const int E4 = 5;
const int D4 = 6;

const int buzzW = 11;
const int buzzR = 12;
const int buzzB = 10;
const int buzzY = 9;
const int buzzG = 8;

int s = 100;

void setup() {
  pinMode(B4, INPUT_PULLUP);
  pinMode(G4, INPUT_PULLUP);
  pinMode(F4, INPUT_PULLUP);
  pinMode(E4, INPUT_PULLUP);
  pinMode(D4, INPUT_PULLUP);

  pinMode(buzzW, OUTPUT);
  pinMode(buzzR, OUTPUT);
  pinMode(buzzB, OUTPUT);
  pinMode(buzzY, OUTPUT);
  pinMode(buzzG, OUTPUT);
}

void loop() {

  if (digitalRead(D4) == LOW){
    delay (20);
    s = 294;
    tone(buzzW, s, 20);
  }if (digitalRead(E4) == LOW){
    delay(20);
    s = 330;
    tone(buzzR, s, 20);
  }if (digitalRead(F4) == LOW){
    delay(20);
    s = 349;
    tone(buzzB, s, 20);
  }if (digitalRead(G4) == LOW){
    delay(20);
    s = 392;
    tone(buzzY, s, 20);
  }if (digitalRead(B4) == LOW){
    delay(20);
    s = 494;
    tone(buzzG, s, 20);
  }
}