int Do = 262; // do                   

int Re = 294; // re                  

int Mi = 330; // mi                  

int Fa = 349; // fa                   

int Sol = 392; // sol                 

int Lya = 440; // la                   

int Si = 494; // si                   

int donce = 523; // do (thin)

#define buz 3 //buzzer name and pin 
#define button 2

int but = 0; // For read situation by buton

void setup() {

pinMode(buz, OUTPUT);   //We set INPUT or OUTPUT
pinMode(button, INPUT);

}

void loop() {

but = digitalRead(button); // Reading the button situation

if (but == HIGH) 
{

tone(buz,donce);  //The alarm starting
delay(500);
noTone(buz);
delay(10);
tone(buz,Re);
delay(300);  

}
 else                //When button doesn't HIGH
noTone(buz);

}