void setup() {
  // put your setup code here, to run once:
pinMode(0, OUTPUT); 
pinMode(13, OUTPUT);
pinMode(12, OUTPUT); 
pinMode(11, OUTPUT); 
pinMode(10, OUTPUT); 
pinMode(9, OUTPUT); 
pinMode(8, OUTPUT); 
pinMode(7, OUTPUT); 
pinMode(6, OUTPUT); 
}

void loop() {
  // put your main code here, to run repeatedly:
tone(0, 500);
digitalWrite(0, HIGH);
delay(500); 
digitalWrite(0, LOW);
noTone(4);
delay(300); 

tone(0, 600); 
digitalWrite(13, HIGH);
delay(500); 
digitalWrite(13, LOW);
noTone(4); 
delay(300); 

tone(0, 700); 
digitalWrite(12, HIGH);
delay(500); 
digitalWrite(12, LOW);
noTone(4);
delay(300); 

tone(0, 800); 
digitalWrite(11, HIGH);
delay(500); 
digitalWrite(11, LOW);
noTone(4);
delay(300); 

tone(0, 900); 
digitalWrite(10, HIGH);
delay(500); 
digitalWrite(10, LOW);
noTone(4);
delay(300); 

tone(0,1000); 
digitalWrite(9, HIGH);
delay(500); 
digitalWrite(9, LOW);
noTone(4);
delay(300); 

tone(0,1100); 
digitalWrite(8, HIGH);
delay(500); 
digitalWrite(8, LOW);
noTone(4);
delay(300); 

tone(0,1200); 
digitalWrite(7, HIGH);
delay(500); 
digitalWrite(7, LOW);
noTone(4);
delay(300); 

tone(0,1250); 
digitalWrite(6, HIGH);
delay(500); 
digitalWrite(6, LOW);
noTone(4);
delay(300);

}