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 9 //buzzer name and pin 
#define but1 2  //button name and pin
#define but2 3
#define but3 4
#define but4 5
#define but5 6
#define but6 7
#define but7 8

int mav = 0;
int sar = 0;
int qar = 0;
int ag = 0;
int boz = 0;
int yas = 0;
int qir = 0;


void setup() {

pinMode(buz, OUTPUT);   //We set INPUT or OUTPUT
pinMode(but1, INPUT);
pinMode(but2, INPUT);
pinMode(but3, INPUT);
pinMode(but4, INPUT);
pinMode(but5, INPUT);
pinMode(but6, INPUT);
pinMode(but7, INPUT);



}

void loop() {

int mav = digitalRead(but1);
int sar = digitalRead(but2);
int qar = digitalRead(but3);
int ag = digitalRead(but4);
int boz = digitalRead(but5);
int yas = digitalRead(but6);
int qir = digitalRead(but7);

if (mav == HIGH) {

tone(buz,Do,Do);
delay(100);


}

if (sar == HIGH) {

tone(buz,Re,Re);
delay(100);


}

if (qar == HIGH) {

tone(buz,Mi,Mi);
delay(100);


}

if (ag == HIGH) {

tone(buz,Fa,Fa);
delay(100);


}


if (boz == HIGH) {

tone(buz,Sol,Sol);
delay(100);

}
v}