pianola musicale arduino

    void setup() {

     pinMode(3, INPUT);
     pinMode(4, INPUT);
     pinMode(5, INPUT);
     pinMode(6, INPUT);
     pinMode(7, INPUT);
     pinMode(2,OUTPUT);
    }

    void loop() {
     int switch1 = digitalRead(3);
     int switch2 = digitalRead(4);
     int switch3 = digitalRead(5);
     int switch4 = digitalRead(6);
     int switch5 = digitalRead(7);
     if(switch1==HIGH)
     tone(2,3000,100);
     if(switch2==HIGH)
     tone(2,2500,100);
     if(switch3==HIGH)
     tone(2,2000,100);
     if(switch4==HIGH)
     tone(2,1500,100);
     if(switch5==HIGH)
     tone(2,1000,100);
    }