#include "pitches.h"

#define buzzer1 8

const uint8_t buttons[] = { 9,7,6,5,4,3,2,1 };
const int Tones[] = {
  262, 294, 330, 349,392, 440, 494, 523
};
void setup() {
  for (int i = 0; i < 8; i++) {
    pinMode(buttons[i], INPUT_PULLUP);
  }
  pinMode(buzzer1, OUTPUT);
}

void loop() {
  int yd = 0;
  for (int i = 0; i < 8; i++) {
    if (digitalRead(buttons[i]) == LOW) {
      yd = Tones[i];
    }
  }
  if (yd) {
    tone(buzzer1, yd);
  } else {
    noTone(buzzer1);
  }
}